Final answer:
The nurse should advise the parent to increase the child's fluid intake using oral rehydration solutions. A regular diet should be maintained, and anti-diarrheal medications should only be used under medical guidance. It is not recommended to withhold all food. so, option d is the correct answer.
Step-by-step explanation:
The appropriate instruction that the nurse should give to the parent of a client who has had one episode of diarrhea is to increase the child's fluid intake, including oral rehydration solutions. It is crucial to replace fluids lost in diarrhea to prevent dehydration. Oral rehydration solution is a combination of water, salts, and sugar that is often recommended as it helps replenish the body's water and electrolyte levels.
Maintaining a regular diet can be beneficial as it aids in providing the necessary nutrients and helps maintain normal bowel function unless specific food items are exacerbating the diarrhea. Over-the-counter anti-diarrheal medications are not recommended for immediate use and should only be used under medical guidance. Withholding all food until the diarrhea resolves is not advisable, as the body still requires nutrition to recover.