Dora is a very bright student who is in the process of completing her undergraduate degree. she has already been admitted to veterinary school and is very excited to begin. dora loves all animals and knows she will be a great vet one day. however, she also knows that she has an intense fear of dogs, probably stemming from when she was bitten by a dog many years ago. dora knows that she must overcome this fear before she begins vet school. she finds a therapist who has her stand in a room with five dogs; the therapist remains in the room with her. after a few minutes of thinking she needed to run out or start screaming, she realized that the dogs were actually not hurting her. after about an hour and a half, she noticed her anxiety level was substantially lower than it was before she entered the room. the technique seemed to be working. dora's therapist was using the _______ technique known as _______.