True imitation in ABA requires three key characteristics a model a stimulus that is functionally similar to the behavior being imitated a behavior that has formal similarity with the model and the imitated behavior must follow the model immediately Critically for it to be considered true or pure imitation the model itself should be nonverbal and evoke the response without an additional direct verbal prompt In option B the teachers clapping serves as a nonverbal model the students immediate clapping has formal similarity to that model and there is no verbal prompt telling the student to clap Option A involves a verbal prompt Touch your nose in addition to the model making it a form of verbally cued imitation not pure imitation Option C lacks the immediacy criterion as the students action occurs ten minutes after the model Option D is a response to a verbal instruction within a game context Simon says making it an example of following a rule or instruction not imitation of a nonverbal model