______ attempt suicide more often than ______, who are more likely to complete an attempt

Even those who are well-skilled at reading lips can only pick up about _____ percent of what is being said because most of our verbal expression is done inside of the mouth

A) 5–10 B) 10–20 C) 20–30 D) 30–35

In a lot of research on smoking among adolescents, the reported number may not be a useful indicator because

a. most of the research used key informant sampling rather than probability sampling. b. many people are not willing to recognize the extent to which adolescents have become addicted to cigarettes. c. the definition of what it means to smoke is not well defined on most surveys. d. the tobacco industry has been successful in keeping the number of adolescent smokers hidden.