Rearrange the following segments to make a meaningful sentence:

(A) at the progress India has made in the field of nuclear research

(B) the prime minister looked back with satisfaction

(C) will have to accept India as a nuclear power

(D) and asserted that sooner or later the big powers Choose the correct answer from the options given below:

The correct option is (B), (A), (D), (C).

To arrange the segments into a meaningful and grammatically correct sentence, we can analyze the role of each segment step-by-step:

1. Identify the starting segment: Segment (B), "the prime minister looked back with satisfaction", introduces the subject ("the prime minister") and the main action ("looked back with satisfaction"). This serves as an excellent opening clause for the sentence.
2. Find the logical continuation: What did the prime minister look back upon with satisfaction? Segment (A), "at the progress India has made in the field of nuclear research", directly answers this question, completing the initial thought. Combining these gives: "the prime minister looked back with satisfaction at the progress India has made in the field of nuclear research".
3. Connect the next clause: Segment (D) begins with the coordinating conjunction "and" and introduces a new action: "and asserted that sooner or later the big powers". This links smoothly to the preceding clause, continuing the prime minister's statement.
4. Complete the sentence: Segment (C), "will have to accept India as a nuclear power", serves as the object clause that the big powers "will have to accept", completing the thought introduced in segment (D).

Combining all the segments in the order of (B) → (A) → (D) → (C) yields the complete, coherent sentence:
"The prime minister looked back with satisfaction at the progress India has made in the field of nuclear research and asserted that sooner or later the big powers will have to accept India as a nuclear power."