The Critical-Period Hypothesis, Involving a Very Early Prenatal Critical Period

The critical-period hypothesis, involving a very early prenatal critical period, could explain:

A) why homosexuals seem to be aroused by the same types of tactile stimulation as heterosexuals.
B) how sexual orientation is fluid and flexible.
C) why some clinicians consider homosexuality the product of an abnormality of the brain.
D) why sexual orientation is difficult to modify.