Which One of the Following Strategies Was Used as Part

Which one of the following strategies was used as part of the Cognitive Orientation to Daily Occupational Performance (CO-OP) approach to teach the skill of stair climbing?

A) Using a climbing rock wall to build strength and coordination and to simulate the leg movements required for walking up and down stairs
B) Activities aimed at providing vestibular and proprioceptive sensory input such as swinging and climbing on suspended equipment
C) Creating a written story about a child who learned how to climb stairs comfortably.
D) Identifying where the task of stair climbing was breaking down and developing specific strategies to solve the problem, along with lots of practice climbing stairs using the identified strategies