Which of the following observations is an example of a negative (an inverse) correlation?
A. When a group of people decreases their physical activity levels, the percentage of people in the group with healthy levels of body fat decreases.
B. When a group of children eat more sugary foods, the percentage of children in the group who develop two or more decayed teeth increases.
C. When a group of older adults increases their intake of high-fiber foods, the percentage of people in the group who develop intestinal cancer decreases.
D. When a group of adults increases their intake of fruits and vegetables, the percentage of people in the group who have high blood levels of vitamin C levels increases.
Answer: C
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