Pavlov's Discovery of What Would Later Be Labeled Classical Conditioning

Pavlov's discovery of what would later be labeled classical conditioning came about because he noticed that his dogs

A) were learning to perform in a maze even when they were not reinforced
B) responded to a light but not a sound, even though both had been paired with food
C) would salivate in the presence of highly preferred foods but not for foods that were less preferred
D) were salivating prematurely, that is, before the food was present