Meaning: 'Reason' refers to a cause or explanation for an action or event.

Wrong options:

• purpose: 'Purpose' is a noun that indicates the intended aim of an action, but it does not fit as well as 'reason' in this context, which focuses on justification.
• means: 'Means' refers to a method or way of doing something, which does not directly address the justification for the examination.
• establish: 'Establish' is a verb that means to set up or confirm something, which does not fit as a noun in this context.
• specimens: 'Specimens' is a plural noun referring to samples for examination, which does not relate to the justification for conducting an autopsy.
• knowledge: 'Knowledge' is a noun that refers to information or understanding, but it does not fit as a justification for the examination.
• involves: 'Involves' is a verb that indicates participation or inclusion, which does not serve as a noun to explain the reason.

Correct answer: establish

Explanation: The verb 'establish' is appropriate here as it indicates the action of determining or confirming the cause of death, fitting grammatically and contextually within the sentence structure.

Meaning: 'Establish' means to determine or confirm something, in this case, the cause of death.

Wrong options:

• purpose: 'Purpose' is a noun that does not fit grammatically as it does not indicate an action required in this context.
• means: 'Means' is a noun that refers to a method, which does not convey the action of determining the cause of death.
• reason: 'Reason' is a noun that does not fit as it does not indicate an action but rather a justification.
• specimens: 'Specimens' is a plural noun referring to samples, which does not relate to the action of determining a cause.
• knowledge: 'Knowledge' is a noun that does not fit as it does not indicate an action but rather information or understanding.
• involves: 'Involves' is a verb that indicates participation, which does not fit the context of establishing a cause.

Correct answer: knowledge

Explanation: The noun 'knowledge' fits grammatically as it refers to the information or understanding that may be gained from conducting a post-mortem, aligning with the context of medical inquiry.

Meaning: 'Knowledge' refers to the information, understanding, or awareness gained through experience or education.

Wrong options:

• purpose: 'Purpose' is a noun that indicates the intended aim of an action, which does not fit the context of gaining information.
• reason: 'Reason' is a noun that refers to a justification, which does not align with the context of acquiring information or understanding.
• means: 'Means' is a noun that refers to a method or way of doing something, which does not relate to the acquisition of information.
• specimens: 'Specimens' is a plural noun referring to samples for examination, which does not relate to the concept of knowledge.
• establish: 'Establish' is a verb that indicates the action of determining something, which does not fit as a noun in this context.
• involves: 'Involves' is a verb that indicates participation, which does not fit as a noun related to information.

Correct answer: involves

Explanation: The verb 'involves' is appropriate here as it indicates the action of including dissection and tests as part of the post-mortem process, fitting grammatically and contextually within the sentence.

Meaning: 'Involves' means to include or require as a necessary part or condition.

Wrong options:

• purpose: 'Purpose' is a noun that does not fit grammatically as it does not indicate an action required in this context.
• means: 'Means' is a noun that refers to a method, which does not convey the action of including dissection and tests.
• reason: 'Reason' is a noun that does not fit as it does not indicate an action but rather a justification for the examination.
• specimens: 'Specimens' is a plural noun referring to samples, which does not relate to the action of including dissection and tests.
• knowledge: 'Knowledge' is a noun that does not fit as it does not indicate an action but rather information or understanding.
• establish: 'Establish' is a verb that indicates the action of determining something, which does not fit the context of including dissection.