Which Scenario Best Exemplifies an Ecological Approach to Development

Which scenario best exemplifies an ecological approach to development?

A) Eileen first walked on her own around the time of her first birthday.
B) Gwen was born at 39 weeks and weighed 8½ pounds.
C) Leo was toilet trained at 20 months,a standard approach for his community.
D) As a newborn,Loren would grasp his father's finger when he placed it in his hand.