Which hormone is produced by the testes?

Correct option is A

Testosterone is the primary male sex hormone, produced by the testes. It is responsible for male reproductive development, muscle growth, deepening of voice, and secondary sexual characteristics.
Explanation of Each Option:
· Testosterone: Correct answer; the main male sex hormone produced by the testes.
· TSH (Thyroid Stimulating Hormone): Produced by the pituitary gland, regulates thyroid function.
· Cortisol: A stress hormone secreted by the adrenal glands.
· Insulin: Produced by the pancreas, regulates blood sugar levels.