Based on the information presented in the President's Challenge Standards, which of the following statements is true concerning the body mass index (BMI) of boys and girls?

This choice is incorrect because it contradicts the established trend that BMI generally increases with age. If BMI were to decrease as children grew older, it would imply a significant loss of body mass or height, which is not consistent with typical growth and development patterns observed in children.

This statement is misleading as it overlooks the fact that BMI varies based on numerous factors including age, growth spurts, and body composition differences between boys and girls. Generally, boys and girls can have similar BMI values, and any differences that do occur can depend on age and developmental stage rather than a consistent trend.

While it is true that boys and girls can have similar BMI values, this option fails to acknowledge that physiological differences often lead to variations in BMI at certain ages. During puberty, for instance, boys may experience different growth patterns compared to girls, making this statement too absolute.