The following question gives a sentence which has been divided into four parts which may not be in their correct order of narrative. The sentence is then followed by five options, one of which gives the sequence of the rearranged parts to make the sentence meaningful. Choose the option which gives the correct sequence of the parts. If the sentence is already arranged in the correct sequence, mark option " No rearrangement required " as the answer.

(A) which has since become a cornerstone of India's monetary policy,
(B) the inflation-targeting framework was adopted in 2016
(C) helping the Reserve Bank maintain price stability
(D) while supporting the objective of sustainable economic growth

To find the correct sequence of the rearranged parts, let's analyze the grammatical and logical connections between the segments:

1. Segment (B): "the inflation-targeting framework was adopted in 2016"
This segment introduces the main subject ("the inflation-targeting framework") and verb ("was adopted"), making it the most logical starting point for the sentence.

2. Segment (A): "which has since become a cornerstone of India's monetary policy,"
The relative clause starting with "which" acts as a modifier for the "inflation-targeting framework" introduced in (B). Thus, (A) must follow (B) directly. This gives us the sequence B-A.

3. Segment (C): "helping the Reserve Bank maintain price stability"
This participle phrase explains the function and effect of the monetary policy described in (A). Therefore, (C) logically flows after (A). This gives us the sequence B-A-C.

4. Segment (D): "while supporting the objective of sustainable economic growth"
The conjunction "while" links this segment to (C), showing that the Reserve Bank supports economic growth while simultaneously maintaining price stability. Thus, (D) naturally completes the sentence.

Combining these parts in order, we get a coherent and grammatically correct sentence:
"The inflation-targeting framework was adopted in 2016 (B), which has since become a cornerstone of India's monetary policy (A), helping the Reserve Bank maintain price stability (C) while supporting the objective of sustainable economic growth (D)."

Therefore, the correct sequence is BACD.