What is the ultimate cause of differences in intelligence from one person to another?

A) Variations in intelligence are nature's way of eliminating unfit individuals.
B) It is plausible that differences in intelligence are the result of many factors, including an important contribution from an individual's genotype.
C) Variations in intelligence are unreliable, and thus the ultimate cause cannot be determined.
D) There is no evidence that variations in intelligence are inherited.

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Abigail Weekley · Accepted Answer

Final Answer : B, Explanation :  Research suggests that intelligence is influenced by a combination of genetic and environmental factors. Genes contribute to differences in intelligence, but environmental factors, such as education and upbringing, also play a role. Therefore, the ultimate cause of differences in intelligence is likely a combination of nature and nurture. Options A and D are not supported by current scientific evidence, and option C is incorrect as variations in intelligence have been shown to be reliable and stable over time.

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