Which of the following vitamins is found in the B-complex group?

Folate, also known as vitamin B9, is a member of the B-complex group of vitamins, which are essential for various metabolic processes in the body. B-complex vitamins play a vital role in energy production, the synthesis of DNA and RNA, and the metabolism of carbohydrates, fats, and proteins. They are crucial for maintaining healthy skin, muscles, and the nervous system.

While vitamin D, vitamin A, and vitamin E are important nutrients, they do not belong to the B-complex group. Vitamin D is primarily associated with bone health and calcium metabolism, vitamin A is important for vision and immune function, and vitamin E acts as an antioxidant. Each of these vitamins has distinct functions and sources, separate from the B-complex vitamins, which collectively support energy metabolism and overall health.