Based on Research Addressing Ethnic Differences in the Timing and Rate

Multiple Choice

Based on research addressing ethnic differences in the timing and rate of pubertal maturation, which American girl would be expected to be the earliest to mature?

A) Brandy, a middle-income Black adolescent
B) Miranda, a middle-income Mexican adolescent
C) Emily, a middle-income White adolescent
D) Kimberly, a middle-income Asian adolescent