Question

tasha has already experienced some body changes. she has some breast development and pubic hair growth. now she has experienced her menarche. this means that she is developing her ___.
a delayed phase preference
b secular trend
c secondary sex characteristics
d primary sex characteristics

Explanation:

• Delayed phase preference refers to a sleep - wake cycle delay, not related to body changes like breast development.
• Secular trend is about long - term changes in a population (e.g., average height over decades), not individual body changes.
• Primary sex characteristics are the internal and external reproductive organs (e.g., ovaries, uterus).
• Secondary sex characteristics are non - reproductive physical traits that develop during puberty, such as breast development, pubic hair growth, and menarche (first menstrual period).

Answer:

C. secondary sex characteristics