Final answer:
Vitamin D is essential for bone and teeth strength, regulating calcium absorption, and can be found in egg yolks, butter, and fortified milk. Sunlight exposure can also help the body produce vitamin D.
Step-by-step explanation:
The vitamin that is vital for building bones and teeth, and is found in foods such as egg yolks, butter, and fortified milk, is Vitamin D. It plays a crucial role by regulating the absorption of calcium, another essential nutrient for bone health. While our bodies can produce vitamin D when our skin is exposed to sunlight, it may be challenging to get enough vitamin D from this source alone, especially in northern latitudes or during winter months. This makes dietary sources of vitamin D important, particularly for individuals who do not receive sufficient sunlight exposure. Foods that are naturally rich in vitamin D include fatty fish like salmon and tuna, while milk and cereals are often fortified with this nutrient to help promote adequate intake.