None of the given information alone is sufficient to determine that classical conditioning is involved — but based on just this option:
A. Blindfolding someone and timing him to see how long he takes to find a button hidden in a room
This does not involve classical conditioning.
Classical conditioning is a learning process that occurs when two stimuli are repeatedly paired — a neutral stimulus becomes associated with an unconditioned stimulus to produce a conditioned response. For example, Pavlov’s dogs learned to associate the sound of a bell (neutral stimulus) with food (unconditioned stimulus), eventually salivating at the sound alone.
The example given in option A describes an observational or behavioral experiment testing navigation or memory, not classical conditioning. It does not involve pairing stimuli to produce learned responses.
If you have more options from the question, I can help identify the correct one more accurately.