Question

which of the following are primary sex characteristics that develop during the teen years?
1. development of breasts in girls
2. development of body hair in boys
3. development of acne in boys
4. development of ovaries in girls and testes in boys

Answers

GPT-4o mini
Primary sex characteristics are those that are directly related to the reproductive organs and structures involved in sexual reproduction. Among the options provided, the following is a primary sex characteristic that develops during the teen years:

4. development of ovaries in girls and testes in boys

The other options (1, 2, and 3) relate to secondary sexual characteristics or other phenomena that occur during puberty but are not considered primary sex characteristics.

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