Which statement is true regarding Vitamin A?

Vitamin A is essential for various bodily functions, and one of its most alarming deficiencies can indeed lead to blindness, especially in children. This vitamin exists in two primary forms: retinol, which is found in animal products, and provitamin A carotenoids, which are found in plant sources. This dual-source aspect of Vitamin A is significant because it highlights the importance of including both animal and plant-based foods in the diet to meet Vitamin A needs.

A deficiency in Vitamin A can cause serious health issues, including vision problems like night blindness and, in severe cases, complete blindness. Thus, the statement that it can lead to blindness and has two basic forms accurately reflects the critical nature of Vitamin A in overall health and nutrition.

While the other choices mention deficiencies, forms, and sources, they either misrepresent the functions and existence of Vitamin A or introduce inaccurate claims regarding its sources or conditions associated with deficiency. Understanding these nuances about Vitamin A is vital for recognizing its importance in a balanced diet and the consequences of deficiencies.