Question

Which of the following vitamins is water-soluble?
A. $A$
B. $D$
C. $E$
D. $B$

Answer 1

Hint: Vitamins are organic molecules which are essential nutrients that our body or a living organism needs so that the metabolisms work properly. So, there are two sub-classes of nutrients: one is essential and the other is non-essential.

Complete answer:
So, let’s know about the two subclasses in detail: Essential nutrients are those which cannot be synthesized by the body or any living organism, and has to be taken through the diet, whereas the non-essential nutrients are the one which can be synthesized by the body or any living organism and there is no need to take it externally.
When we learn about the solubility of a Vitamin, they are of two types one which is soluble in water and the other which is soluble in fat or in other words lipids. The water-soluble Vitamins get easily dissolved in water and are reluctant to dissolve in fat (Lipids), whereas the Fat-soluble vitamins get easily dissolved in the Fat (lipids) and are reluctant to dissolve in water, the Fat-soluble Vitamins get easily dissolved or in other words absorbed by the lipids present in our body and hence can travel through the general blood circulation of our body.
And out of the given vitamins: Vitamin \[A\], $D$ and $E$ are Fat Soluble, and Vitamin $B$ is Water soluble.

So, the correct answer obtained is Option D.

Note:
Vitamin C is another Vitamin which is water soluble and the purpose of being water-soluble is that it removes the toxins from a human body in the form of excretion.