When working with "Little Peter," who was fearful of various furry objects, Mary Cover Jones used a procedure known as "," in which Peter was first trained to eliminate his fear of rabbits.

Counter conditioning

Explanation:

Counter Conditioning is a technique that is used to eliminate phobias in humans as well as animals.

This technique is also known as reciprocal inhibition. With the help of this technique, the conditioned response of animals for something (barking, showing fear, etc) is changed. It is done by replacing the old conditioned response with the new and happy ones.

In the given case, the fear of furry objects in Little Peter is eliminated using the technique of counter conditioning. Mary Cover Jones had used the technique of counter-conditioning to remove the fears starting with the rabbits.

So, the correct answer is counter conditioning.

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