(A) one of the oldest of the

(B) ayurveda is considered as

(C) medicine accepted worldwide

(D) traditional systems of

In the question below, a grammatically correct and meaningful sentence is given which is divided into four parts namely (A), (B), (C) and (D). Rearrange these four parts to make a contextually and grammatically meaningful sentence. If no such rearrangement is needed, mark 'No rearrangement required' as the answer choice.

To form a grammatically correct and coherent sentence, we must analyze the connections between the given parts:
(A) "one of the oldest of the"
(B) "ayurveda is considered as"
(C) "medicine accepted worldwide"
(D) "traditional systems of"

Let's find the logical flow:
- Part (B) introduces the subject, "ayurveda", and the verb phrase, "is considered as". This is a natural starting point for the sentence.
- What is Ayurveda considered as? It is considered as "one of the oldest of the" (Part A). Therefore, (B) connects directly to (A), forming "ayurveda is considered as one of the oldest of the".
- The phrase "one of the oldest of the" in Part (A) needs a plural noun phrase to follow it. Part (D), "traditional systems of", fits perfectly here. This joins (A) to (D), creating "one of the oldest of the traditional systems of".
- Finally, "traditional systems of" in Part (D) must be followed by what kind of systems they are. Part (C), "medicine accepted worldwide", completes the thought: "traditional systems of medicine accepted worldwide".

Combining these connections in order:
(B) ayurveda is considered as
(A) one of the oldest of the
(B) + (A) ⇒ "ayurveda is considered as one of the oldest of the"
(D) traditional systems of
(B) + (A) + (D) ⇒ "ayurveda is considered as one of the oldest of the traditional systems of"
(C) medicine accepted worldwide
(B) + (A) + (D) + (C) ⇒ "ayurveda is considered as one of the oldest of the traditional systems of medicine accepted worldwide"

This sequence forms a grammatically correct and contextually meaningful sentence. The correct sequence of parts is B-A-D-C.

Therefore, the correct rearrangement is BADC.