Final answer:
Instructions and Modeling are the antecedent strategies in the behavioral skills training procedure.
Step-by-step explanation:
In the behavioral skills training procedure, instructions is the antecedent strategy that has the role of providing information about the desired behavior. It helps set the occasion and clarifies the expectations for the learner. Modeling is another antecedent strategy where the tutor demonstrates the desired behavior for the learner to imitate. Rehearsal is not an antecedent strategy but rather a part of the training where the learner practices the desired behavior with feedback and reinforcement.