Which statement correctly identifies secondary sex characteristics?

• A. Changes involved with reproduction that are non-visible
• B. Changes not associated with reproduction such as hair growth, skin, and voice changes
• C. Primary sex characteristics
• D. Internal changes only

Answer: (B)

Secondary sex characteristics are the visible and nonreproductive changes that emerge during puberty to differentiate the sexes. The statement describes changes not associated with reproduction such as hair growth, skin, and voice changes, which fits this idea because these traits arise from hormonal changes and signal maturation without being the organs or structures directly involved in producing offspring. This differs from primary sex characteristics, which are the reproductive organs themselves (like ovaries, testes, and related anatomy). Some secondary changes are visible, such as facial and body hair or a deeper voice in males, while others may be internal or affect the skin or other tissues, but they all serve to indicate sexual maturation rather than to enable reproduction itself.