The vitamin primarily obtained from sunlight exposure is Vitamin D. This essential nutrient is produced by the skin in response to UV rays from the sun and plays a crucial role in maintaining bone health, immune function, and overall well-being. Vitamin D aids in the absorption of calcium and phosphorus, which are vital for strong bones and teeth. Insufficient vitamin D levels can lead to conditions such as osteomalacia or osteoporosis. For individuals with limited sun exposure, dietary sources or supplements may be necessary to meet their needs.