Which of the Following Is an Example of a Conditioned

Multiple Choice

Which of the following is an example of a conditioned emotional response?

A) A girl's heart rate increases upon entering the theater where she had previously seen a horror movie.
B) A boy is startled by a sudden loud noise outside his window on a stormy night.
C) A woman screams when she nearly steps on a snake during a mountain hike.
D) A child smiles on hearing a funny joke.