Baby Gerber Smiles and Coos So Often and Is So

Multiple Choice

Baby Gerber smiles and coos so often and is so delightful that his parents feel compelled to smile and chatter right back at him. Which sort of genetic environmental does this best illustrate?

A) Active genotype-environment
B) Evocative genotype-environment
C) Passive genotype-environment
D) Negative genotype-environment