Yellow-orange vegetables and fruits, such as squash and apricots, are important sources of

Question

BlackTom AI · Accepted Answer

The question asks about yellow-orange vegetables and fruits, such as squash and apricots, and what nutrient they are important sources of.
Option 1: vitamin A. This is the best choice because carotenoids (notably beta-carotene) give these foods their orange color and are converted in the body to vitamin A, which is essential for vision, immune function, and cell growth. This makes yellow-orange produce a notable source of vitamin A.
Option 2: vitamin D. This vitamin is mainly synthesized in the skin with sunlight exposure and is found in few foods, typically fortified products or certain fats like fatty fish. Yellow-orange produce is not a meaningful source of vitamin D, so this option is inaccurate for these foods.
Option 3: vitamin C. While many fruits and vegetables contain vitamin C, the brightest vitamin C-rich items are often citrus or other colorful produce rather than specifically yellow-orange varieties. The question emphasizes vitamin A-rich pigments as characteristic of these foods, so vitamin C is not the primary association here.
Option 4: vitamin E. Vitamin E is found in certain vegetable oils, nuts, and seeds, and is not a defining nutrient of yellow-orange produce. This makes it an unlikely primary source in squash and apricots compared with vitamin A.
In summary, the orange-yellow hues of squash and apricots reflect carotenoids that are converted to vitamin A in the body, making vitamin A the key nutrient associated with these foods, while the other vitamins are not the main nutritional highlight of this produce group.

Yellow-orange vegetables and fruits, such as squash and apricots, are important sources of单项选择题

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