Which of the following statements is true about the relationship between brain size and some aspects of intelligence?

a. Brain size is moderately related to intelligence.
b. There is no relationship between brain size and intelligence.
c. Brain size is an almost perfect predictor of intelligence.
d. The number and size of cerebral gyri, but not overall brain size, are related to intelligence.

Answer: A

Rationale: One recent study to adopt this approach found that across 36 species, there was a clear correlation between a larger brain and better performance on the task