Waist hip ratio (WHR) is a measure of body fat distribution, with a lower ratio indicating healthier body composition. For females, a WHR below **0.8** is considered normal and associated with lower risk of cardiovascular diseases and metabolic disorders. A ratio of 0.7 is too low and may indicate underweight or extreme thinness, while 0.9 or above suggests increased abdominal fat and higher disease risk. The WHO and other health bodies define 0.8 as the threshold for healthy WHR in women.

**✓ Correct: B. 0.8**