The word "reciprocity" (Line 2, Para. 3) refers to ______.

A．If one is used to tardiness, he will be reluctant to turn their relatively slow life pace into a faster one.
B．Members of the military and the government always hold meetings late because no one will participate.
C．The rich and powerful are more likely to show up late to show their importance.
D．The workers have to be on time while their employers can be late.

A．"It pays to get some professional advice before you make a decision"
B．"He didn't pay any attention to what I said"
C．"My mother pays for my driving lessons"
D．"I decided to pay my friends a visit"