What Is a Legitimate Question Concerning the Lack of Success

Multiple Choice

What is a legitimate question concerning the lack of success of older adults on Piagetian tasks?

A) Could it be due to a lack of motivation to solve tasks that are so rarely encountered in real life?
B) Could it be due to the over emphasis on IQ testing common to Piagetian tasks?
C) Could it be due to slower reaction times commonly found in older study participants?
D) Could it be due to the fact that normal hearing is required to solve all of Piaget's tasks?