A.I. Explanation:

Correct answer: that

Explanation: The word 'that' is used to introduce a clause, making it grammatically correct in this context. It connects the statement made by anthropologists to the assertion about primitive man, aligning well with the overall structure of the sentence.

Meaning: 'That' is a conjunction used to introduce a clause, indicating what is being said or thought.

Wrong options:

• then: 'Then' indicates a time sequence and does not fit the context of introducing a statement.
• those: 'Those' is a demonstrative pronoun referring to specific items or people, which does not grammatically connect to the clause being introduced.
• these: 'These' is also a demonstrative pronoun, similar to 'those,' and does not serve the purpose of introducing a clause.

Correct answer: smaller

Explanation: The word 'smaller' is the comparative form of 'small,' which is appropriate here as it compares the diversity of skills in simpler societies to that in more complex societies. This fits grammatically and contextually within the sentence structure.

Meaning: 'Smaller' means having less size or quantity, in this case referring to the diversity of skills and occupations.

Wrong options:

• small: 'Small' is the base form and does not provide the necessary comparative context required in this sentence.
• smallest: 'Smallest' is the superlative form, which is not suitable as we are comparing two groups, not indicating the least in a group.
• snip: 'Snip' is unrelated to the context of diversity and does not fit grammatically or contextually.

Correct answer: advanced

Explanation: The word 'advanced' is an adjective that describes societies that are more developed or complex. It fits grammatically as it aligns with the comparative structure of the sentence, contrasting with simpler societies.

Meaning: 'Advanced' means having progressed or developed to a higher level, particularly in terms of complexity or sophistication.

Wrong options:

• forward: 'Forward' indicates direction rather than development and does not fit the context of describing societal complexity.
• ahead: 'Ahead' also suggests a position in time or space rather than a level of development, making it unsuitable here.
• radical: 'Radical' implies fundamental change or departure from tradition, which does not accurately describe the comparative nature of societal complexity.

Correct answer: less

Explanation: The word 'less' is used to indicate a smaller degree of something, in this case, individualism. It fits grammatically as it compares the level of individualism in different societies, maintaining consistency with the comparative structure of the sentence.

Meaning: 'Less' means a smaller amount or degree, indicating that individuals in simpler societies have a lower level of individualism.

Wrong options:

• under: 'Under' suggests a position or condition rather than a comparative degree, making it grammatically incorrect in this context.
• never: 'Never' indicates a time frame and does not fit the comparative structure needed here.
• free: 'Free' implies a lack of restrictions, which does not align with the intended meaning of comparing levels of individualism.