Final answer:
The most suitable method to explain an impending heart surgery to a 10-year-old child is to use a model of the heart, allowing for visual learning and interactive engagement.
Step-by-step explanation:
When teaching a 10-year-old child about their impending heart surgery, it's essential to provide information in a way that is both understandable and comforting. At this developmental stage, children are capable of logical thought and can understand basic anatomical concepts, yet they may still benefit from concrete visual aids. Hence, the most suitable option would be to explain the surgery using a model of the heart (D). This allows the child to visualize the procedure, which can help alleviate fears and misconceptions. Additionally, using a model can be engaging and interactive, aiding in the child's comprehension of what will happen during their surgery.
Explaining with a model offers the child a visual representation, which can be more effective than a verbal explanation alone or reading from a booklet. It also allows for a more personalized explanation where the child can ask questions and develop a better understanding of their surgery, compared to meeting another child who had surgery, which may induce fear or raise more questions.