Some Native Peoples of South America Use the Drug Curare

Multiple Choice

Some native peoples of South America use the drug curare to poison the tips of their hunting arrows. When an animal is struck by the arrow, it goes limp and quickly suffocates. Why?

A) Serotonin floods into the synaptic gap.
B) Dopamine reuptake is blocked.
C) Acetylcholine receptor sites are blocked
D) Endorphin receptor sites are destroyed.