Multiple Choice
Puberty began for Nancy when she was 9 years old. Her mother began puberty at 11 years. For her grandmother, the onset was at 13 years of age. These changes in the age of onset of puberty over time are referred to as:
A) cross-sectional trend.
B) secular trend.
C) longitudinal trend.
D) physiologic trend.
Correct Answer:
Verified
Correct Answer:
Verified
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