The factors that play a role in determining a person's weight from your list include:
- Heredity - Genetic factors can influence body weight and fat distribution.
- Activity level - Physical activity affects calorie expenditure and can significantly influence weight.
- Body composition - This refers to the proportion of fat and lean mass in the body, which can affect overall weight and health.
Body mass index (BMI) is a measurement derived from a person's weight and height, and while it can be used as an indicator of body weight status, it does not directly influence a person's weight itself.
So, the applicable factors are:
- Heredity
- Activity level
- Body composition