While at the Dentist,six-Year-Old Alex Listens as His Mom Tells

While at the dentist,six-year-old Alex listens as his mom tells the dentist she flosses her teeth at least three times a week.Alex notices that the dentist smiled at and complimented his mom on her behavior.As a result of this brief encounter,Alex's mom will be likely to continue to floss as a result of ____ and Alex will be likely to have a favorable attitude concerning flossing as a result of ____.

A) observational learning; operant conditioning
B) operant conditioning; observational learning
C) operant conditioning; classical conditioning
D) classical conditioning; operant conditioning