The correct answer is A. A tool used to measure and evaluate individual weight
Step-by-step explanation
The body mass index (BMI) is a series of categories that take into account the weight and height of a person to evaluate and classify it into one of its categories according to their body mass index. Some classifications have four or five categories, however, doctors use a table of eight categories for their work.
The categories are very severe thinness (15 or less), severe thinness (15 to 15.9), thinness (16 to 18.4), healthy weight, (18.5 to 24.9) overweight (25 to 29.9), moderate obesity (30 to 34.9), severe obesity (35 to 39.9) and very severe obesity or morbid obesity (40 or more).
To know the index of body mass of an individual it is necessary to know their height and weight, with these data you must divide the weight in kg, in height in meters squared. For example, a person who is 173cm tall and weighs 64kg should divide 64 by 173, the result of this operation is 21.4, which according to the table would be in a healthy body mass index. So, the correct answer is A. Tool used to measure and evaluate individual weight.