According to Savic and her colleagues (2010), during pregnancy sexual differentiation:

A. of the sex organs occurs during the last trimester of pregnancy and brain structures differentiate during the second trimester of the pregnancy.
B. of the sex organs occurs concurrently during the second trimester.
C. is determined at conception.
D. of the sex organs occurs during the first two months and brain structures differentiate during the second half of the pregnancy.

Sexual differentiation during pregnancy involves the development of sex organs and brain structures, with external sex organs differentiating by the 12th week of gestation.

Explanation:

Sexual differentiation during pregnancy involves the development of the sex organs and brain structures. External sex organs typically differentiate by the 12th week of gestation and can be determined with near 100% accuracy through ultrasound. Additionally, testosterone plays a significant role in the formation of male external sex organs.

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