Which of the Following Is an Example of the Development

Which of the following is an example of the development of a phobia through classical conditioning?

A) John has a fear of heights and avoids looking out the window of his office in a high-rise building.
B) After watching graphic film coverage of the aftermath of a severe tornado that has been aired repeatedly on the local TV news program, Matt feels nervous whenever there are signs of an impending storm.
C) After being attacked by a man in an elevator, Evelyn developed a phobia of elevators and other small, confined spaces.
D) After reading about the dangers of tick-borne diseases, Cindy is afraid to go hiking in the woods.