Theo plays basketball for his high school team. He is concerned that he is not consuming enough calories to support his activity. Which of the following would be the BEST indicator that he is not consuming enough calories?

A. impaired performance on the court

B. weight loss

C. low blood glucose levels

D suffering a fracture

The correct answer is B. weight loss

Explanation:

Calorie is considered a unit of energy and athletes like basketball players require more calories than common people. Calories are present in our food and every food provide a different amount of calories to us.

To gain weight people require to consume more calories than they burn and to reduce weight people must burn more calories than they consume. So losing weight by theo shows that theo is not taking enough calories to support his activity.

Therefore theo should improve the calorie intake up to that level where he can maintain his body weight. Therefore the correct answer is B.