During Jack’s first week in therapy, you ask him to imitate the target behavior, adjective + noun is verb+ing (sad boy is crying; big girl is eating) while looking at pictures. Data across two sessions shows less than 50% accuracy. During the second week, with SLP approval, you change your therapy and ask him to imitate adjective + noun (sad boy, big girl). What teaching strategy is this? Group of answer choices prompt explanation negative practice shaping demonstration