212k views
1 vote
Morphine and codeine are the chief mind-affecting chemicals in the pain-relieving drug __________.

A. heroin
B. opium
C. methadone
D. All of the above

2 Answers

4 votes
the best answer would be c
User Adam Jaamour
by
6.6k points
4 votes
c , methadone would be my best answer
User Harshit Hiremath
by
6.9k points