Secondary sex characteristics are produced by that are produced by the a. hormones; gonads
b. spermatozoa; testes
c. hormones; spermatozoa
d. gonads; hormones

A. hormones; gonads

Explanation:

When it comes to human anatomy, secondary sex characteristics are features that appear during puberty.

For men, these include increased body hair, the ability to grow facial and chest hair, lack of rounded hips, increased upper body strength, and the ability to generate muscle mass faster than women.

For women, they include the relative lack of body hair, rounded hips, decreased upper body strength, decreased ability to generate muscle mass as fast as men, breasts, ability to nurse children, a menstrual cycle, and increased body fat.

These traits are developed by hormones (testosterone in men, and estrogen and progesterone in women) produced by the gonads (testes in men and ovaries in women).

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