The fact that "dog bites man" has a very different meaning from "man bites dog" demonstrates the importance of

For every 100 males conceived, there are about 110 females conceived

Indicate whether the statement is true or false

Engaging in brief, superficial social contacts, ignoring nonessential events, and adopting a cold, callous, unfriendly expression may help city dwellers to

a. reduce territorial behavior. b. prevent learned helplessness. c. reduce attentional overload. d. maintain self-esteem.