George wants to increase his consumption of vitamin A for the possible cancer risk-reducing effects. Which of the following foods should he choose?

Question

BlackTom AI · Accepted Answer

The question presents a scenario where George aims to increase vitamin A intake due to potential cancer risk-reducing effects, and asks which food he should choose.
Option 1: Potato. While potatoes are a source of several nutrients, they are not notably high in vitamin A. They primarily offer potassium, vitamin C, and fiber, but not the significant retinol activity or provitamin A carotenoids that would impact vitamin A status.
Option 2: Pears. Pears are delicious fruits rich in fiber and vitamin C, yet they are not a meaningful source of vitamin A. They contribute little to retinoids or carotenoids compared with leafy greens or orange vegetables.
Option 3: Spinach. Spinach is well known for containing beta-carotene, a provitamin A carotenoid, which the body can convert to active vitamin A. This direct link to increasing vitamin A intake makes it a sensible choice for someone seeking the cancer-risk–reducing potential associated with vitamin A from diet.
Option 4: Salmon. Salmon provides omega-3 fatty acids and vitamin D, among other nutrients, but it is not a notable source of vitamin A. Its nutrient profile does not prioritize retinoids or provitamin A carotenoids.
In summary, among the options listed, spinach stands out as the food with meaningful vitamin A content through carotenoids, aligning with the goal of increasing vitamin A intake. The other options either lack vitamin A content or contribute it minimally relative to spinach.

George wants to increase his consumption of vitamin A for the possible cancer risk-reducing effects. Which of the following foods should he choose?单项选择题

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