A.I. Explanation:

Correct answer: originated

Explanation: The word 'originated' fits grammatically as it is the past tense of the verb 'originate,' which aligns with the context of discussing how certain aspects of our lives may have developed over time. It indicates the beginning or source of something, which is appropriate here as Pinker is arguing that these aspects are adaptations from our evolutionary past.

Meaning: 'Originated' means to have begun or come into existence from a particular source.

Wrong options:

• immune: 'Immune' is an adjective that describes being resistant to something, which does not fit the context of discussing how something came to be.
• differ: 'Differ' is a verb that means to be unlike or distinct, which does not relate to the concept of origins or adaptations.
• roots: 'Roots' is a noun that refers to the fundamental source or basis of something, but it does not fit grammatically as a verb in this context.
• occupations: 'Occupations' is a noun that refers to jobs or professions, which is irrelevant to the discussion of evolutionary adaptations.
• employment: 'Employment' is a noun that refers to the state of having a job, which does not relate to the concept of origins or adaptations.

Correct answer: immune

Explanation: The word 'immune' is used as an adjective to describe something that is not affected by a particular influence. In this context, it suggests that no aspect of human behavior is exempt from being explained through evolutionary adaptations, which fits both grammatically and contextually.

Meaning: 'Immune' means resistant or not affected by something.

Wrong options:

• originated: 'Originated' is a verb that does not fit grammatically in this context, as the sentence requires an adjective to describe the noun 'nothing.'
• differ: 'Differ' is a verb that means to be unlike or distinct, which does not fit the context of describing something that is not affected.
• roots: 'Roots' is a noun that does not fit grammatically as it cannot describe 'nothing' in this context.
• occupations: 'Occupations' is a noun that refers to jobs or professions, which does not fit the context of the sentence.
• employment: 'Employment' is a noun that refers to the state of having a job, which does not relate to the context of being affected or not.

Correct answer: roots

Explanation: The word 'roots' serves as a noun that refers to the fundamental source or basis of something. In this context, it indicates that various behaviors and phenomena may have their origins in natural selection, fitting both grammatically and contextually as it aligns with the discussion of evolutionary influences.

Meaning: 'Roots' refers to the basic cause or source of something.

Wrong options:

• immune: 'Immune' is an adjective that describes being resistant to something, which does not fit as a noun in this context.
• differ: 'Differ' is a verb that means to be unlike or distinct, which does not relate to the concept of origins or sources.
• originated: 'Originated' is a verb that does not fit grammatically as a noun in this context, as the sentence requires a noun to describe the basis of behaviors.
• occupations: 'Occupations' is a noun that refers to jobs or professions, which is irrelevant to the discussion of origins in natural selection.
• employment: 'Employment' is a noun that refers to the state of having a job, which does not relate to the concept of origins or roots.