Final answer:
An extinction burst is most likely to result in an increase in the frequency, intensity, or duration of the behavior before it begins to decrease.
Step-by-step explanation:
During an extinction burst, the most likely outcomes would be an increase in the frequency, intensity, or duration of the behavior. This is a temporary increase in the behavior's strength before it begins to decrease due to the absence of reinforcement. In this context, 'extinction' refers to the decrease in the conditioned response when the unconditioned stimulus is no longer paired with the conditioned stimulus in operant conditioning. The correct answer to the student's question is option a) Increase in the frequency, intensity, or duration of the behavior. Options b, c, and d do not typically occur during an extinction burst. Instead, they may represent patterns observed after the extinction burst period if the behavior continues to not be reinforced.