One-Month-Old Infants Were Given Either a Smooth Pacifier or One

Multiple Choice

One-month-old infants were given either a smooth pacifier or one with hard nubs on which to suck. Although they had not seen the pacifier while sucking on it, when given the opportunity to look, the infants stared longer at the type of pacifier that they had sucked on. This shows that they have

A) cross-modal perception.
B) dark adaptation.
C) inter-sensory sensation.
D) repression.