A nurse in a special education program is planning care for a child who has autism spectrum disorder. Which of the following interventions should the nurse include in the plan of care?

The correct answer is D: Establish a reward system for positive behavior. This intervention is effective in managing behavior in children with autism spectrum disorder by reinforcing desired behaviors. Rewards provide motivation and positive reinforcement, encouraging the child to continue exhibiting positive behavior. Allowing for adjustment of rules (A) may lead to inconsistency and confusion for the child. Imaginative play with peers (B) without supervision may pose safety concerns. Providing a flexible schedule (C) that adjusts to the child's interests may lead to difficulties in transitioning and adapting to structured environments.