You would be most likely to use operant conditioning to teach a dog to

A) fear cars in the street.
B) dislike the taste of dead birds.
C) wag its tail whenever it is emotionally excited.
D) retrieve sticks and balls.

Operant conditioning involves using rewards and punishments to shape behavior. Teaching a dog to retrieve sticks and balls involves reinforcing the behavior of picking up and bringing back the object, which is an example of operant conditioning. The other choices (fearing cars, disliking the taste of dead birds, wagging its tail) are not necessarily behaviors that can be shaped through operant conditioning.