Answer:
Echolalia
Step-by-step explanation:
Echolalia is defined as the phenomenon of the repetition or imitation of the words, noises, sentences, sounds of other person by an individual.
This communication disorder is commonly found in people suffering from Autism Spectrum Disorder.
Thus in case of Terry, who is having Autism Spectrum Disorder, he suffered with the communication disorder of Echolalia due to which he repeats what his teacher said.