Final answer:
The nurse should expect the provider to prescribe Megestrol to reduce the client's risk of failure to thrive.
Step-by-step explanation:
The nurse should expect the provider to prescribe Megestrol to reduce the client's risk of failure to thrive.
Megestrol is a medication commonly used to stimulate appetite and promote weight gain in patients experiencing anorexia due to conditions such as AIDS.
In contrast, Ondansetron, Metoclopramide, and Dronabinol are medications primarily used to manage nausea and vomiting, rather than to stimulate appetite.