Final answer:
Peggy should call her supervisor to seek a replacement while she attends to her son's emergency, thus ensuring her duties are covered and her family's needs are met. Option c is the answer.
Step-by-step explanation:
The appropriate course of action for Peggy, who is a home health aide facing a situation where her son's teacher calls to report an accident, would be option C: Call her supervisor and ask if there is another aide who could cover for her while she goes to pick up her son at school. This option allows her to address the immediate needs of her family while also ensuring that the client she is responsible for continues to receive necessary care. It is a professional response that respects her duties to both her employer and her family. Options A and B may not appropriately prioritize the urgency of her son's situation, and option D could potentially create liability issues or be against the policy of her employer.