Which of the following statements is true of education as a way of changing people's behavior?
1. The 1964 surgeon general's report on smoking and health had no effect on people's smoking behavior
2. The Food and Drug Administration's practice of requiring labels stating the fat content of prepared foods has had no effect on the fat content of people's diets
3. The Food and Drug Administration's practice of requiring labels stating the fat content of prepared foods has not
reduced the prevalence of obesity in the United States.
4. Sex education in schools is not effective in reducing rates of adolescent pregnancy
