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A kindergarten teacher is working on a unit on human body systems with the class. The lesson that would be most developmentally appropriate for this grade level would include teaching the students to identify: OA. behaviors that influence the functioning of the body (e.g., moving fast causes faster heartbeat and breathing). O B. basic body systems and their functions (e.qg., circulatory, respiratory, nervous). OC. stages in growth and development of the body (e.g., stages in the life cycle from infancy to old age). I OD. physical, mental, social, and cultural factors that affect growth and development in the body (e.g., nutrition, iliness)