Psychological Disorders Appear Only If Stressors in the Environment Trigger

Psychological disorders appear only if stressors in the environment trigger them, so inheriting the genetics for a particular disorder doesn't doom someone to have that disorder. Panic disorder runs in Allie's family, but because the environment never triggered it, she has no problems with it. We can say that panic disorder is part of Allie's

A) genotype.
B) phenotype.
C) eugenics.
D) strategic pluralism.