What is hypoglycemia?

• A. Very low blood sugar
• B. High blood sugar
• C. Normal blood sugar
• D. Low blood sugar - <70 mg/dL

Answer: (D)

Hypoglycemia is when blood sugar is too low. Clinically, it’s defined as a blood glucose level below 70 mg/dL. The best answer includes both the description and the numeric threshold, because it clearly states what counts as “low” and provides a specific value to rely on. Descriptions that don’t specify a threshold, or that describe high or normal sugar, don’t capture the concept of low blood sugar. In a workout context, recognizing this threshold helps you respond promptly if someone shows symptoms and needs a quick source of glucose.