A BMI of ______ or more in adults is defined as Obesity.

Correct option is C

Obesity in adults is defined by a BMI of 30 or more. BMI (Body Mass Index) is a measure that compares weight to height, and a BMI of 30 and above indicates excess body fat, which is considered obesity.
Explanation of each option:
· (a) 20 – Incorrect. A BMI of 20 falls within the normal weight range. A BMI between 18.5 and 24.9 is considered healthy, so 20 is not classified as obesity.
· (b) 25 – Incorrect. A BMI of 25 indicates being overweight, which is a risk factor for developing obesity but does not meet the criteria for it. Obesity begins at a BMI of 30.
· (c) 30 – Correct. A BMI of 30 or higher is classified as obesity. This is a key indicator for health risks such as heart disease, diabetes, and hypertension.
· (d) 40 – Incorrect. A BMI of 40 or higher is categorized as morbid obesity or severe obesity, which is an even higher risk level than general obesity (BMI 30 and above).