From the last paragraph, we learn that envy sometimes stems from ______.

A．have as much fun as possible during one's lifetime
B．make every effort to liberate oneself from pain
C．put up with pain under all circumstances
D．be able to distinguish happiness from fun

A．is reluctant to take on family responsibilities
B．believes that life will be more cheerful if he remains single
C．finds more fun in dating than in marriage
D．fears it will put an end to all his fun adventure and excitement