One of the Wundtian Mental Chronometry Experiments Had One Condition

Multiple Choice

One of the Wundtian mental chronometry experiments had one condition in which the subject was required to make a different response to each of two different stimuli,and another in which two stimuli were randomly presented but only one had to be responded to.The mental process presumably required for the first task,but not for the second,was

A) perception.
B) apperception.
C) cognition.
D) association.