Questions: Which of the following statements is true of low-carbohydrate diets? A They're effective at reducing body fat. (B) They elevate blood pressure. (C) They often lead to diarrhea. (D) They induce ketosis. (E) They're a sound means of weight loss.

The answer is (D): They induce ketosis.

Explanation for each option: A. They're effective at reducing body fat.

• This statement can be true for some individuals, but it is not universally true for everyone. The effectiveness of low-carbohydrate diets in reducing body fat can vary based on individual metabolism, adherence to the diet, and other factors.

B. They elevate blood pressure.

• This statement is generally not true. In fact, some studies suggest that low-carbohydrate diets can help reduce blood pressure in some individuals.

C. They often lead to diarrhea.

• This statement is not typically true. While some individuals may experience gastrointestinal changes when starting a low-carbohydrate diet, diarrhea is not a common or defining characteristic.

D. They induce ketosis.

• This statement is true. Low-carbohydrate diets, particularly ketogenic diets, are designed to induce a state of ketosis, where the body burns fat for fuel instead of carbohydrates.

E. They're a sound means of weight loss.

• This statement is subjective and can vary from person to person. While some people may find low-carbohydrate diets effective for weight loss, others may not. Additionally, the long-term sustainability and health impacts of such diets are still debated.

Summary: The correct answer is (D): They induce ketosis. This is a defining characteristic of low-carbohydrate diets, especially ketogenic diets.