If a Warning Stimulus Remains on After the Avoidance Response

Multiple Choice

If a warning stimulus remains on after the avoidance response, avoidance learning can be facilitated by

A) using spaced versus massed trial training procedures.
B) presenting another stimulus right after the response.
C) presenting a Pavlovian excitatory CS when the response occurs.
D) presenting the aversive stimulus after the warning stimulus, as in an ordinary conditioning trial.