Question

people who are addicted to rx (prescription) opioids are ___% more likely to be addicted to heroin.
○ a 15%
○ b 10%
○ c 60%
○ d 40%

Explanation:

Research indicates that people addicted to prescription opioids have a significantly higher likelihood of becoming addicted to heroin. The commonly - cited figure is around 40%.

Answer:

d. 40%