Final answer:
Parental monitoring is not correlated with a greater risk of earlier onset sexual intercourse; it can actually decrease risky sexual behavior among adolescents.
Step-by-step explanation:
The factor that is not correlated with a greater risk of earlier onset sexual intercourse among the options provided is b) Parental monitoring. Research, such as the study by Donenberg et al. (2002), suggests that increased parental monitoring can lead to decreased risky sexual behavior among adolescents. In contrast, factors like peer influence, low socioeconomic status, and lower academic achievement have been associated with a greater risk of early sexual initiation. This is further supported by research such as Potard, Courtoisand, and Rusch (2008), and other studies indicating the influence of societal and individual factors on sexual behaviors during adolescence.