Meaning: 'However' is used to introduce a statement that contrasts with or seems to contradict something that has been said previously.

Wrong options:

• Another: 'Another' is a determiner that indicates an additional item, which does not fit the context of contrasting ideas.
• machines: 'Machines' is a noun that does not serve as a transitional word and does not fit grammatically in this position.
• not including: 'Not including' is a phrase that suggests exclusion, which does not logically connect the ideas in the sentence.
• That: 'That' is a demonstrative pronoun that does not provide the necessary contrast and does not fit grammatically here.
• researchers: 'Researchers' is a noun that does not function as a transitional word and does not fit the grammatical structure of the sentence.
• software: 'Software' is a noun that does not fit in this context as it does not provide a contrast to the previous statement.
• such as: 'Such as' is a phrase used to introduce examples, which does not fit the context of contrasting ideas.

Correct answer: such as

Explanation: The phrase 'such as' is used to introduce examples that clarify the preceding statement about applications with a single use. It fits grammatically and contextually as it leads into specific instances of AI applications.

Meaning: 'Such as' is used to provide examples or specifics related to a general statement.

Wrong options:

• Another: 'Another' is a determiner that indicates an additional item, which does not fit as it does not introduce examples.
• however: 'However' is a transitional adverb that indicates contrast, which does not fit the context of providing examples.
• machines: 'Machines' is a noun that does not serve to introduce examples and does not fit grammatically in this position.
• not including: 'Not including' suggests exclusion, which does not logically connect to the idea of providing examples.
• That: 'That' is a demonstrative pronoun that does not function to introduce examples and does not fit grammatically here.
• researchers: 'Researchers' is a noun that does not fit as it does not introduce examples in this context.
• software: 'Software' is a noun that does not fit in this context as it does not serve to introduce examples.

Correct answer: Another

Explanation: The word 'Another' is used as a determiner to introduce an additional example of AI applications. It fits grammatically as it indicates that there is more than one application being discussed.

Meaning: 'Another' refers to an additional item or example in a series.

Wrong options:

• however: 'However' is a transitional adverb that indicates contrast, which does not fit the context of introducing an additional example.
• machines: 'Machines' is a noun that does not serve to introduce an additional example and does not fit grammatically in this position.
• not including: 'Not including' suggests exclusion, which does not logically connect to the idea of adding another example.
• That: 'That' is a demonstrative pronoun that does not function to introduce an additional example and does not fit grammatically here.
• researchers: 'Researchers' is a noun that does not fit as it does not introduce an additional example in this context.
• software: 'Software' is a noun that does not fit in this context as it does not serve to introduce another example.
• such as: 'Such as' is a phrase used to introduce examples, which does not fit the context of adding another item.

Correct answer: machines

Explanation: The word 'machines' is a plural noun that refers to devices capable of performing tasks, fitting grammatically as it aligns with the context of discussing AI applications that can run on various devices.

Meaning: 'Machines' refers to devices or equipment that can perform tasks, particularly in the context of technology.

Wrong options:

• however: 'However' is a transitional adverb that does not fit as a noun in this context.
• not including: 'Not including' is a phrase that suggests exclusion and does not fit grammatically as a noun.
• That: 'That' is a demonstrative pronoun that does not serve as a noun and does not fit in this context.
• researchers: 'Researchers' is a noun that refers to people conducting studies, which does not fit the context of discussing devices.
• software: 'Software' is a noun that refers to programs and applications, which does not fit as a noun describing devices.
• such as: 'Such as' is a phrase used to introduce examples, which does not fit as a noun in this context.
• Another: 'Another' is a determiner that indicates an additional item, which does not fit as a noun.

Correct answer: software

Explanation: The word 'software' is a noun that refers to the programs and applications that enable machines to perform tasks. It fits grammatically as it completes the idea of what can run on machines in the context of AI applications.

Meaning: 'Software' refers to the programs and applications that run on computers and other devices.

Wrong options:

• however: 'However' is a transitional adverb that does not fit as a noun in this context.
• not including: 'Not including' is a phrase that suggests exclusion and does not fit grammatically as a noun.
• That: 'That' is a demonstrative pronoun that does not serve as a noun and does not fit in this context.
• researchers: 'Researchers' is a noun that refers to people conducting studies, which does not fit the context of discussing programs.
• machines: 'Machines' is a noun that refers to devices, which does not fit as a noun describing the type of programs.
• such as: 'Such as' is a phrase used to introduce examples, which does not fit as a noun in this context.
• Another: 'Another' is a determiner that indicates an additional item, which does not fit as a noun.