Final answer:
Early sexual activity has been linked to increased risk of sexually transmitted infections, higher rates of teen pregnancy, and lower self-esteem, but not academic success.
Step-by-step explanation:
The correct answer is b) Academic success. Early sexual activity has been linked to increased risk of sexually transmitted infections, higher rates of teen pregnancy, and lower self-esteem (Potard et al., 2008). However, research does not support a direct link between early sexual activity and academic success.