A nurse is caring for a toddler. Which of the following statements should the nurse use when preparing to obtain the child's vital signs?

A. The term "blood pressure" can be confusing and scary for a toddler. B. Asking for permission might not be effective, and "lungs" might be too complex a term. C. Asking the child to stand still can be challenging and the term "warm" might be unclear. D. Using simple and clear language, such as "I am going to listen to your heart," helps the child understand the procedure without causing unnecessary anxiety.