Which of the following is an example of a cognitive process?
Select one:

a) Cindy, a 20-year-old student, who imagines herself as the governor of Florida.
b) Jacob, a 22-year-old athlete, who is aggressive while playing any sport.
c) Amy, an 11-year-old girl, whose height and weight increase during adolescence.
d) Kevin, an infant, who smiles in response to his mother's touch.