Infant Godfrey Had Been Staring at a Picture of a Face,but

Multiple Choice

Infant Godfrey had been staring at a picture of a face,but having grown tired of that,he resumed sucking on his pacifier.Soon after,a new picture was presented and he stopped his sucking altogether.Researchers would say that Godfrey is exhibiting

A) habituation.
B) dishabituation.
C) attention-deficit disorder.
D) extraordinary perceptual skills.