Amphetamines are to ________ as barbiturates are to ________.

Amphetamines are to ________ as barbiturates are to ________.

Amphetamines are to ________ as barbiturates are to ________.





A) hallucinogens; depressants
B) stimulants; depressants
C) hallucinogens; stimulants
D) stimulants; hallucinogens





Answer: B