Question

why must the misuse of prescription and illegal drugs be avoided?
○ reduces the risk of serious side effects
○ decreases blood pressure
○ reduces respiratory diseases
○ decreases the risk of cancer

Explanation:

Misusing prescription and illegal drugs can lead to serious side effects like organ damage, addiction, etc. Avoiding misuse reduces the likelihood of these serious adverse reactions. The other options (reducing respiratory diseases, blood pressure, or cancer risk) are not direct reasons for avoiding drug misuse; rather, avoiding misuse prevents negative impacts, with reducing serious side - effect risk being the core reason.

Answer:

A. reduces the risk of serious side effects