Carl is listening to his colleague give an overview of the store's new vacation policy. Which behavior can Carl exhibit to best demonstrate that he is paying attention to what his colleague is saying?
A. Say "Yes, okay" frequently
B. Confirm what"s being said with the person next to him
C. Summerize back what he heard at the end of his colleague's overview
D. Tap his finger on his knees
Both A and D are wrong. The answer is either C or D.
