**Core Concept**
Two molecules of B-Carotene are converted into one molecule of Vitamin A through the action of the enzyme beta-carotene dioxygenase in the intestinal mucosa.

**Why the Correct Answer is Right**
This conversion is essential for the body to utilize the provitamin A activity of beta-carotene, which is found in various fruits and vegetables. The resulting Vitamin A is then transported to various tissues and organs, where it plays a crucial role in vision, immune function, and epithelial cell maintenance. The enzyme beta-carotene dioxygenase catalyzes the cleavage of beta-carotene into two molecules of retinaldehyde, which are then reduced to retinol (Vitamin A) in a subsequent step.

**Why Each Wrong Option is Incorrect**
**Option A:** Incorrect because it is not supported by scientific evidence, and the correct conversion ratio is 2:1.
**Option B:** Incorrect because it is not the correct product of beta-carotene conversion; the correct product is Vitamin A, not Vitamin E.
**Option C:** Incorrect because it is not the correct enzyme responsible for beta-carotene conversion; the correct enzyme is beta-carotene dioxygenase, not beta-carotene reductase.

**Clinical Pearl / High-Yield Fact**
A diet rich in beta-carotene-rich fruits and vegetables is essential for maintaining adequate Vitamin A levels, particularly in individuals with malabsorption syndromes or those at risk for Vitamin A deficiency.

**Correct Answer:** 2. Two molecules of beta-carotene.