Animals Trained on Schedules of Reinforcement Sometimes Show a Post-Reinforcement

Multiple Choice

Animals trained on schedules of reinforcement sometimes show a post-reinforcement pause-they stop responding for a while immediately after reinforcement is delivered. Which of the following schedules would NOT show a post-reinforcement pause?

A) Fixed-interval
B) Fixed-ratio
C) Variable-interval
D) Short-delay schedule
E) Intermittent ratio