What does BMI stand for and how is it calculated?

The correct choice identifies BMI as Body Mass Index, which is a standard measurement used to assess whether a person has a healthy body weight for a given height. It is calculated by taking an individual's weight in kilograms and dividing it by the square of their height in meters. This formula provides a simple numerical value that can be used to categorize individuals into different weight status categories, such as underweight, normal weight, overweight, and obese, based on their BMI score.

Understanding the calculation method is crucial because it ensures accuracy in determining BMI, which is often used in clinical settings and research to evaluate a person's body composition. This calculation is universally accepted and is typically employed by health professionals to address weight-related health risks.

Other choices refer to incorrect definitions or calculations related to BMI. For instance, the mention of Body Muscle Index or Body Metabolic Index does not pertain to the established BMI terminology. Additionally, the calculation methods in those options, such as dividing weight by height squared in inches or using centimeters and grams, are not the correct formulas for BMI. This reinforces the importance of both the terminology and the proper calculation methodology in understanding BMI as a health indicator.