Suriya's Older Brother, Pranav, Excelled in School and Was President

Multiple Choice

Suriya's older brother, Pranav, excelled in school and was president of the math club.Suriya is quite good at sports and is more focused on sports than academics, which he likes because it helps reduce his competition with Pranav in the academic realm.This illustrates:

A) confluent niche selection
B) ecological systems creation
C) resource theory
D) sibling differentiation