Question

every year in the united states, about 12 million new cases of stds are reported. over 60% of these cases originate from people under 25, with roughly three million being from teenagers. which conclusion can be drawn from this data? more than three million teenagers contracted an std this year. about one in four teenagers contract an std each year. people under 25 engage in unprotected sex more often than people over 25. teenagers account for the majority of the transmission of various stds.

Explanation:

Step1: Analyze option A

The text says "roughly three million being from teenagers", not more than three million. So A is wrong.

Step2: Analyze option B

12 million new cases. 3 million from teenagers. $\frac{3}{12}=\frac{1}{4}$. So about one - in - four. B is correct.

Step3: Analyze option C

The data only gives the number of cases, not information about unprotected sex frequency. So C is wrong.

Step4: Analyze option D

Over 60% are from under 25 (not just teenagers). So teenagers don't account for the majority of transmission. D is wrong.

Answer:

B. About one in four teenagers contract an STD each year.