The word "good" in "the national good" in the second paragraph probably means__________.

A．Americans stick to old wasteful habits.
B．Americans believe their country is abundant with natural resources.
C．Many people will lose their jobs on account of conservation.
D．It is difficult to recycle paper, cans, bottles and other goods.

A．to list the new values the United States must adopt
B．to explain the necessity to adopt new values
C．to tell the reader it is impossible to adopt new values
D．to state that new values have replaced the old ones