The word "good" in "the national good" in the second paragraph probably means ______.

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

A．restricted to about one dozen species or less
B．akin to a faculty possessed by men in all stages of development
C．present chiefly in winged creatures
D．related directly to preservation or offspring