When Researchers Gave Animals an Injection of an Inert Placebo

Multiple Choice

When researchers gave animals an injection of an inert placebo to pre-expose them to the contextual cues associated with drug use, they found that the animals:

A) formed an association between the context and drug use more quickly than normal.
B) formed an association between the context and drug use more slowly than normal.
C) formed an association between the context and drug use more at the normal rate.
D) did not form an association between the context and drug use.