Which Situation Is NOT an Example of Learning

Multiple Choice

Which situation is NOT an example of learning?

A) After being poked, a sea slug moves a part of its body because, in the past, a poke preceded a shock.
B) The smell of Mexican food makes a hungry person salivate even before the person begins eating.
C) A 3-year-old child can begin toilet training, but a 1-year-old is not yet able to start the process.
D) When a dog is given a treat after doing a trick, the dog is more likely to perform tricks in the future.