**Core Concept**
Waist to hip ratio (WHR) is a widely used anthropometric measure to assess the risk of cardiovascular diseases, particularly heart disease. It is calculated by dividing the waist circumference by the hip circumference. A WHR of 0.9 or higher for men and 0.85 or higher for women is considered a risk factor for heart disease.

**Why the Correct Answer is Right**
The increased WHR indicates central obesity, which is associated with insulin resistance, dyslipidemia, and hypertension. Central obesity leads to an increased risk of developing metabolic syndrome, a cluster of conditions that increase the risk of heart disease. The visceral fat in the abdominal region secretes pro-inflammatory cytokines and free fatty acids, which contribute to the development of atherosclerosis and cardiovascular disease.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as it does not specify a correct WHR value.
**Option B:** This option is incorrect as it does not provide a valid WHR value.
**Option C:** This option is incorrect as it does not provide a valid WHR value.
**Option D:** This option is incorrect as it does not provide a valid WHR value.

**Clinical Pearl / High-Yield Fact**
A WHR above 1.0 in men and 0.9 in women is associated with an increased risk of cardiovascular disease. This ratio is a simple and effective tool for screening for central obesity and assessing cardiovascular risk in clinical practice.

**Correct Answer: D. 1.0**