Which among the following is a sign of dehydration?

Correct option is B

Sol. Dry mouth is a common and early clinical sign of dehydration. Dehydration occurs when the body loses more fluids than it takes in, affecting normal physiological function. Reduced saliva production leads to a sticky, dry feeling in the mouth. It is often accompanied by thirst, dark urine, fatigue, and dizziness.
Explanation of each option:
· (a) Decrease thirst – Incorrect. In dehydration, thirst increases to encourage water intake. A decreased thirst is not characteristic of dehydration.
· (b) Dry Mouth – Correct. One of the earliest and most obvious signs of dehydration due to lack of sufficient fluid for saliva production.
· (c) Increased urine output – Incorrect. Dehydration usually causes reduced urine output as kidneys try to conserve water.
· (d) Fever – Incorrect. While fever may cause dehydration, it is not a direct sign of dehydration itself.