Answer:
A. Drinking a solution of sugar and salt
Explanation:
A. Drinking a solution of sugar and salt (oral rehydration solution) is often recommended for treating diarrhea, especially if it's caused by dehydration. This solution helps replace lost fluids and electrolytes.
B. Drinking pure water alone may not be sufficient for treating diarrhea, as it doesn't contain electrolytes that are lost during diarrhea. However, it's essential to stay hydrated, so drinking water alongside appropriate electrolyte replacement solutions can be beneficial.
C. Eating more fiber may exacerbate diarrhea, especially if it's caused by conditions such as inflammatory bowel disease or infection. Fiber can increase stool bulk and worsen symptoms in some cases.
D. Eating protein such as a boiled egg can be part of a balanced diet, but it may not directly address the underlying cause of diarrhea. However, consuming protein is generally not harmful unless it exacerbates symptoms in specific individuals with known food intolerances.
So, the answer is A. Drinking a solution of sugar and salt.