题目选项分析

Phytonutrients, found in fresh fruits and vegetables, have beneficial effects on the human cardiovascular system. Because heart disease is a major health concern, American doctors should encourage all people, especially those with heart disease, to eat a diet high in fresh fruits and vegetables.

Which of the following, if true, provides the most support for the argument above?

【选项】folks with heart disease who eat few or no fresh fruits and vegetables have heart attacks at a much higher rate than do the folks who eat those foods.