When using My Plate to choose fruits and vegetables, one should include a vitamin C source such as citrus fruit and a dark green vegetable each day, as a source of:________.a. vitamin A.b. vitamin D.b. zinc. c. selenium.

a. vitamin A.

MyPlate is a visual guide created by the United States Department of Agriculture (USDA) to help people understand the proportions of different food groups they should consume at each meal. The MyPlate model includes sections for fruits, vegetables, grains, protein, and dairy, aiming to provide a well-balanced diet.

Vitamin C is a vital nutrient that is present in many fruits and vegetables, especially in citrus fruits like oranges, lemons, and grapefruits. Vitamin C is an antioxidant and helps the body absorb iron, heal wounds, and maintain healthy skin.

Dark green vegetables, such as spinach, kale, and broccoli, are indeed excellent sources of several nutrients, including vitamin A. Vitamin A is crucial for normal vision, the immune system, and reproduction. It also helps the heart, lungs, kidneys, and other organs work properly. In the context of My Plate, by including a variety of vegetables in their diet, including dark green vegetables, individuals ensure they get a range of nutrients necessary for maintaining good health.

To clarify, although vitamin D, zinc, and selenium are also essential nutrients, they are not primarily associated with the consumption of dark green vegetables. Vitamin D is mainly obtained from sunlight exposure and certain foods like fatty fish. Zinc and selenium are found in various foods, including meats, nuts, and dairy products. It's important to maintain a varied diet to meet all nutritional needs.