A Research Hypothesis Proposes That Consuming Low-Carbohydrate Diets Results in Increased

A research hypothesis proposes that consuming low-carbohydrate diets results in increased weight loss. One group of people follows a low-carb diet for three weeks, while a second group follows a high-carb diet containing the same number of calories for three weeks. The average number of pounds lost per person is compared. What is the independent variable?

A) the amount of carbs in each diet
B) the number of calories in each diet
C) number of pounds lost
D) length of time on the diet

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