Given below are two statements, one is labelled asAssertion (A) :and the other as Reason (R).Assertion (A):Most of the vitamins are not synthesised in the human body.Reason (R):Human organs synthesise only essential micronutrients.Select the correct answer from the codes given below.

1. A

   Both (A) and (R) are true and (R) is the correct explanation of (A)

   (a) Both true and (R) explains (A). (R) is not true: essential micronutrients are defined as those the body cannot make in enough amount, so organs do not “only synthesise essentials”.

2. B

   Both (A) and (R) are true but (R) is not the correct explanation of (A)

   (b) Both true but (R) does not explain (A). (R) itself fails, so both-true is unavailable.

3. C

   (A) is true, but (R) is false

   (c) (A) is true, (R) is false. Humans must eat most vitamins; a few (D, K, niacin from tryptophan, some B12 via flora) are partial exceptions. (R) reverses the meaning of essential. (c) Official key.

4. D

   (A) is false, but (R) is true

   (d) (A) false, (R) true. Most vitamins are indeed not made in human tissues in adequate amount, so (A) is not false.

Summary. Official key is (c). Assertion stands: diet must supply most vitamins. Reason fails: essential micronutrients are those we do not synthesise adequately—not the only things human organs make.