A decisive enlargement of his larynx caused Jerry's voice to deepen when he was 13 years old.The larynx enlargement best illustrates
A) spermarche.
B) a primary sex characteristic.
C) androgyny.
D) a secondary sex characteristic.

Question

Quizplus · Accepted Answer

The larynx enlargement is a secondary sex characteristic because it is a physical change that occurs during puberty, specifically during the period of male puberty. It is not directly related to reproduction (spermarche - A) or the development of reproductive organs (primary sex characteristics - B). Androgyny (C) refers to someone who exhibits both traditionally masculine and feminine traits, and is not relevant to this question.

A Decisive Enlargement of His Larynx Caused Jerry's Voice to Deepen