You Just Adopted a Puppy and Want to Teach It

Multiple Choice

You just adopted a puppy and want to teach it to fetch the newspaper. What approach would

A) Punish the puppy each time it does not fetch the paper.
B) Give the puppy a treat each time it gets a little closer to fetching perfectly.
C) Give the puppy a treat each time it fetches perfectly and not otherwise.
D) Be patient and understand that behavior shaping occurs naturally over developmental stages.