Final answer:
Most U.S. parents prefer abstinence-plus education over abstinence-only education, as it includes broader information on safe sexual practices and contraception, leading to more effective outcomes in reducing unintended pregnancies and STIs.
Step-by-step explanation:
The topic under discussion is the level of parental support for different types of sex education programs, specifically abstinence-only education versus abstinence-plus education. According to national surveys, most U.S. parents support the abstinence-plus approach to sex education, which includes information on both abstaining from sexual activity and on safer sexual practices and contraception. This suggests that parental support for abstinence-plus education is higher compared to abstinence-only programs. Research has found that abstinence-only education is less effective in reducing unintended pregnancies and the spread of sexually transmitted infections (STIs) than programs that emphasize safer sexual practices.