Final Answer:
Puberty marks the beginning of sexual maturation in boys, and the first notable change typically observed is testicular enlargement.
thus correct option is C. Testicular enlargement
Step-by-step explanation:
Puberty marks the beginning of sexual maturation in boys, and the first notable change typically observed is testicular enlargement. This physical change is triggered by hormonal shifts, particularly an increase in testosterone production, leading to the growth of the testes.
During puberty, the hypothalamus signals the pituitary gland to release hormones, stimulating the testes to produce testosterone. Testicular enlargement usually occurs between the ages of 9 and 14, heralding the onset of puberty.
This initial manifestation often precedes other developments such as the growth of pubic hair, facial hair, and changes in the voice. While these changes occur subsequently, the enlargement of the testes is considered the first visible sign of puberty in boys.
Understanding these physical changes is crucial for adolescents as it marks the beginning of their reproductive maturity. Educating them about these developments can help alleviate concerns and promote a healthy understanding of their bodies during this transitional phase.
thus correct option is C. Testicular enlargement