One- and Two-Day-Old Infants Received a Sucrose Solution

Multiple Choice

One- and two-day-old infants received a sucrose solution. The sucrose served as an unconditioned stimulus that elicited the unconditioned response of sucking. The conditioned stimulus consisted of the experimenter stroking the baby's forehead immediately before the delivery of sucrose. The conditioned response is the

A) sucking in response to the sucrose alone.
B) sucking in response to the forehead stroking alone.
C) sucking in response to dextrose.
D) head turn toward the sucrose.