Veritas Prep Official Solution:
The correct answer to this question is (D). This is an Inference question, requiring the test taker to choose the correct answer which must be true based on the information provided in the stimulus.
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A. Individuals who walk on a regular basis do not run any risk of developing hypertension.
Regarding choice A, the passage only infers that walking lowers the occurrence of hypertension, but does not state that walking eliminates the risk of hypertension.
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B. Individuals who do not walk on a regular basis run a high risk of developing hypertension.
Choice B is incorrect because the passage only infers that one way to lower the occurrence of hypotension is walking; it does not infer that this is the only way to lower the risk of hypertension.
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C. Walking is the most effective method for increasing blood flow and decreasing a resting heart rate.
Choice C is incorrect as the passage states that walking can assist some people in increasing blood flow and decreasing their resting heart rate, but it does not infer that this is the only way to achieve such results.
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D. A program of regular walking for some people can lower a risk factor for strokes.
Choice D is the correct answer. This statement properly identifies the inference that for some people, walking increases blood flow and decreases resting heart rates, which lowers the occurrence of hypertension, itself a risk factor for strokes.
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C. Only regular walking is necessary to lower the risk of heart attacks.
Choice E is incorrect as the passage infers that regular walking reduces a risk factor for heart attacks, but does not infer that this is the only way to lower such risks.