Which refers to those times in an individual's life when he or she is more susceptible to positive or negative influences?

A) Sensitive period
B) Sequential period
C) Terminal points
D) Differentiation points

Sensitive periods are limited times during the process of growth when the organism will interact with a particular environment in a specific manner. These times make the organism more susceptible to positive or negative influences. The sequential period, terminal points, and differentiation points are developmental times that do not make the organism more susceptible to environmental interaction.