Which vitamin is primarily obtained from sunlight?

Vitamin D is primarily obtained from sunlight because it is produced in the skin when it is exposed to UVB rays from the sun. This process is essential for maintaining healthy bones and teeth, as Vitamin D helps the body absorb calcium and phosphorus from the diet. While some foods also contain Vitamin D, such as oily fish and fortified products, the most natural and significant source is through sun exposure.

In contrast, Vitamin A is primarily found in foods such as liver, carrots, and leafy greens, while Vitamin C is abundant in fruits and vegetables like oranges and peppers. Similarly, Vitamin E is mainly found in nuts, seeds, and vegetable oils. Therefore, among the options provided, Vitamin D is the only vitamin that the body synthesizes directly through sunlight exposure, making it the correct choice for this question.