Saline solution is given to patients of cholera because :

Explanation

Cholera is an acute infection of the small intestine caused by the bacterium Vibrio cholerae, resulting in severe vomiting and diarrhea (known as rice-water stools) that leads to dehydration. The disease is contracted through the consumption of contaminated food or drinking water containing feces from an infected individual. The resulting dehydration and imbalance in the body's fluid concentration can lead to death within 24 hours. Since a significant amount of fluids and salts are rapidly lost through stools and vomiting, the most critical treatment involves rapidly replacing the lost fluids and salts. Rapid fluid and electrolyte replacement is achieved through oral rehydration therapy, with electrolytes comprising Na+ ions that help prevent water loss from the body.