Final answer:
The most recent National Survey of Family Growth data suggests that around 70% to 78% of teenagers ages 15-19 have permissive attitudes towards birth control, leading to C) 75% being the closest answer to the question asked.
Step-by-step explanation:
The specific percentage of teenagers, ages 15-19, who use at least one form of birth control can be found in the National Survey of Family Growth. According to the most recent data, 70 percent of boys and 78 percent of girls in this age range have expressed viewpoints that suggest a more open attitude towards sex and birth control usage. While the multiple-choice question provided doesn't match these statistics exactly, the closest answer, and therefore correct in the context of this question, would be C) 75%.
It's important to note that this percentage indicates the prevalence of contraceptive use and acceptance among teenagers, rather than the effectiveness of the methods used. This number also reflects broader social and sexual attitudes that are influencing contraceptive practices among young people.