Question

what are the effects of opioids?
a. slows down or stops breathing
b. induces sleepiness
c. suppresses cough reflex
d. all of the above

Explanation:

Opioids can slow down or stop breathing (respiratory depression), induce sleepiness due to their central - nervous - system depressant effects, and suppress the cough reflex.

Answer:

D. All of the above