This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Fluid and electrolytes, Subject name: Pediatrics
Best parameter to monitor the response to injection of a bolus dose of fluids in a dehydrated child is 
Select and explain. 
A. Skin condition, B. Difference between core and surface temperature, C. Capillary refilling time, D. Radial pulse
D: Radial pulse
Answer: D: Radial pulse 
Explanation: Signs of mild or moderate dehydration include: Thirst ,Dry or sticky mouth. Signs of severe dehydration include: Not peeing or having very dark yellow pee. Very dry skin. Feeling dizzy. Rapid heabeat. Rapid breathing. Sunken eyes. Sleepiness, lack of energy, confusion or irritability. Fainting. Reference: GHAI Essential pediatrics, 8th edition