Answer:
Rats in the first group will produce a strong stimulus i.e fear of shock towards the tone as compared to the rats in the second group.
Step-by-step explanation:
Rats in the first group were conditioned to sense the fear with the tone played just before each shock while on the other hand rats in the second group will be exposed to both unconditioned (without tone) and conditioned (with tone) shock treatment.
Therefore, the rats in the first group will produce a strong stimulus i.e fear of shock towards the tone (as they hear it) as compared to the rats in the second group.