Meaning: 'Both' refers to two items or people together, indicating that Edison held two titles.

Wrong options:

• novelty: 'Novelty' refers to something new or unusual, which does not fit as it does not describe a role or title.
• credit: 'Credit' refers to acknowledgment or recognition, which does not apply to describing Edison's roles.
• patented: 'Patented' is a verb form that indicates the act of obtaining a patent, which does not describe a role or title.
• developed: 'Developed' is a verb that indicates the process of growth or advancement, which does not fit in this context.
• tremendous: 'Tremendous' is an adjective that describes something very large or great, which does not apply to describing Edison's roles.
• improved: 'Improved' is a verb that indicates making something better, which does not fit as a description of Edison's roles.
• tribute: 'Tribute' refers to an act, statement, or gift intended to show gratitude or respect, which does not describe a role.

Correct answer: tremendous

Explanation: The word 'tremendous' is an adjective that describes the significant and large scale of change that Edison would witness in his lifetime. It fits contextually as it emphasizes the magnitude of the changes in society during that period.

Meaning: 'Tremendous' means very large or great, indicating the scale of change Edison experienced.

Wrong options:

• novelty: 'Novelty' refers to something new or unique, which does not accurately describe the scale of change.
• credit: 'Credit' refers to acknowledgment or recognition, which does not fit the context of describing change.
• patented: 'Patented' is a verb that refers to obtaining a patent, which does not relate to the concept of change.
• developed: 'Developed' is a verb that indicates growth or advancement, which does not fit as it does not describe the nature of change.
• both: 'Both' refers to two items or people together, which does not apply to describing the nature of change.
• improved: 'Improved' is a verb that indicates making something better, which does not fit in this context as it does not describe the scale of change.
• tribute: 'Tribute' refers to an act or statement intended to show respect, which does not relate to the concept of change.

Correct answer: novelty

Explanation: The term 'novelty' is used to describe electricity as something new and not yet fully accepted or understood by society at the time of Edison's birth. This fits grammatically and contextually as it conveys the perception of electricity during that era.

Meaning: 'Novelty' refers to the quality of being new, original, or unusual, indicating that electricity was seen as a new concept.

Wrong options:

• tremendous: 'Tremendous' describes something very large or great, which does not fit as it does not describe the nature of electricity.
• credit: 'Credit' refers to acknowledgment or recognition, which does not apply to describing electricity's status.
• patented: 'Patented' is a verb that refers to obtaining a patent, which does not relate to the concept of electricity's perception.
• developed: 'Developed' is a verb that indicates growth or advancement, which does not fit as it does not describe the status of electricity.
• both: 'Both' refers to two items or people together, which does not apply to describing the nature of electricity.
• improved: 'Improved' is a verb that indicates making something better, which does not fit in this context as it does not describe electricity's status.
• tribute: 'Tribute' refers to an act or statement intended to show respect, which does not relate to the concept of electricity.

Correct answer: credit

Explanation: The word 'credit' is a noun that refers to acknowledgment or recognition for achievements. It fits grammatically and contextually as it indicates that Edison is recognized for his contributions to the progress of electricity.

Meaning: 'Credit' means acknowledgment or recognition for something done, in this case, Edison's contributions to progress.

Wrong options:

• novelty: 'Novelty' refers to something new or unusual, which does not fit as it does not relate to recognition or acknowledgment.
• tremendous: 'Tremendous' describes something very large or great, which does not apply to the concept of acknowledgment.
• patented: 'Patented' is a verb that refers to obtaining a patent, which does not relate to recognition or acknowledgment.
• developed: 'Developed' is a verb that indicates growth or advancement, which does not fit as it does not describe recognition.
• both: 'Both' refers to two items or people together, which does not apply to the concept of acknowledgment.
• improved: 'Improved' is a verb that indicates making something better, which does not fit in this context as it does not describe recognition.
• tribute: 'Tribute' refers to an act or statement intended to show respect, which does not fit as it does not convey the same meaning as credit.

Correct answer: patented

Explanation: The word 'patented' is the past participle of the verb 'patent,' indicating that Edison obtained patents for his inventions. This fits grammatically as it describes the action he took regarding his inventions and aligns with the context of his prolific inventiveness.

Meaning: 'Patented' means to obtain a patent for an invention, indicating that Edison secured legal rights for his inventions.

Wrong options:

• novelty: 'Novelty' refers to something new or unusual, which does not fit as it does not describe an action taken by Edison.
• credit: 'Credit' refers to acknowledgment or recognition, which does not apply to the action of obtaining patents.
• developed: 'Developed' is a verb that indicates growth or advancement, which does not fit as it does not describe the action of obtaining patents.
• tremendous: 'Tremendous' describes something very large or great, which does not apply to the action of obtaining patents.
• both: 'Both' refers to two items or people together, which does not apply to the action of obtaining patents.
• improved: 'Improved' is a verb that indicates making something better, which does not fit in this context as it does not describe the action of obtaining patents.
• tribute: 'Tribute' refers to an act or statement intended to show respect, which does not relate to the action of obtaining patents.