Final answer:
Glucose intolerance is a common characteristic of an overweight child, which can lead to serious conditions such as type 2 diabetes.
Step-by-step explanation:
Childhood obesity is often indicated by body weight that is at least 20 percent higher than what would be considered a healthy weight for a given height.
A common characteristic of an overweight child may include glucose intolerance, which can eventually lead to more serious conditions such as type 2 diabetes.
Due to the complex nature of obesity, an overweight child may show different characteristics, but glucose intolerance is one that is closely associated with the condition. Therefore, the correct answer is (2) glucose intolerance.