Occasionally Someone Claims That "If Some Behavioral Condition Is Controlled

Multiple Choice

Occasionally someone claims that "if some behavioral condition is controlled by genes, then there is nothing we can do to change it." Which of the following phenomena provides the strongest, clearest evidence against that claim?

A) the effects of corpus callosum damage on the ability to localize sounds
B) the effects of hypnosis on recall of old memories
C) the effects of L-DOPA on Parkinson's disease
D) the effects of diet on phenylketonuria