Final answer:
The patient should be started on 0.9% Normal Saline as the fluid of choice for dehydration due to nausea and vomiting.
Step-by-step explanation:
The patient should be started on 0.9% Normal Saline as the fluid of choice for dehydration due to nausea and vomiting. This solution is also known as isotonic saline, meaning that it has a similar concentration of solutes as the body's fluids. It is commonly used to replace lost fluids and restore electrolyte balance.