To solve the problem, we need to identify the age at which males begin to produce sperm, marking the onset of sexual maturity.
1. Understanding Male Puberty:
Puberty in males typically begins between the ages of 12 and 16. During this time, various physiological changes occur, including the development of secondary sexual characteristics and the initiation of sperm production in the testes.
2. Onset of Spermatogenesis:
Spermatogenesis (the process of sperm formation) usually begins around the age of 13 to 14 years, coinciding with the onset of puberty.
3. Clarification of Options:
- Option (1): 20–25 years — Too late
- Option (2): 8–10 years — Too early
- Option (3): 18–20 years — Late for start of spermatogenesis
- Option (4): 13–14 years — Matches normal onset of puberty ✅
Final Answer:
Men begin producing sperm from around .