Step 1: Understanding Body Mass Index (BMI)
BMI is a measure used to categorize individuals based on their weight in relation to their height. It is calculated using the formula:
\[
\text{BMI} = \frac{\text{Weight (kg)}}{[\text{Height (m)}]^2}
\]
Step 2: WHO classification of obesity
According to the World Health Organization (WHO), BMI categories are as follows:
- Underweight: BMI < 18.5
- Normal weight: BMI 18.5–24.9
- Overweight (Pre-obese): BMI 25.0–29.9
- Obesity Grade I: BMI 30.0–34.9
- Obesity Grade II: BMI 35.0–39.9
- Obesity Grade III (Severe or Morbid Obesity): BMI >= 40.0
Step 3: Matching Grade II Obesity
Grade II obesity falls in the BMI range of 35.0 to 39.9, which corresponds to Option (C).
Step 4: Final Answer
Hence, the correct answer is Option (C): 35.0–39.9.