Support for the Theory That Tolerance Is Triggered by Drug-Induced

Support for the theory that tolerance is triggered by drug-induced changes in neural activity rather than from drug exposure per se came from the finding in one study that tolerance did not develop to the anticonvulsant effects of alcohol unless

A) convulsive stimulation was administered.
B) convulsive stimulation was administered after each alcohol injection.
C) convulsive stimulation was administered before each alcohol injection.
D) an anticonvulsant drug was administered before each alcohol injection.
E) alcohol was an anticonvulsant.