Which of the Following Would NOT Be Falsifiable

Which of the following would NOT be falsifiable?

A) "Children who spend much time in day care centers before age one year develop about the same personality as those reared at home by their parents."
B) "Dreams are motivated by wish fulfillment and are usually disguised to hide their true meaning."
C) "Behaviors followed by reinforcement increase in frequency."
D) "People identify the direction of a sound source by comparing the response in the left ear with the response in the right ear."