Question

Rearrange the following phrases into a meaningful sentence: The need for a scientific understanding ______.
(A) the Rio Earth Summit, the first of its kind
(B) involving world leaders on environment and development
(C) of natural ecosystems including forests was the main objective of
(D) of phenomena like climate change, biodiversity, and conservation

• A. (C), (D), (A), (B)
• B. (B), (C), (D), (A)
• C. (D), (C), (A), (B)
• D. (D), (B), (A), (C)

Hint:

Always look for prepositions. "Understanding" is almost always followed by "of." Since both (D) and (C) start with "of," check which one flows better from the word "understanding."

Answer 1

The Correct Option is C

Step 1: Understanding the Concept:
The sentence discusses the purpose of a summit. We must link the noun "understanding" to the objects being understood.
Step 2: Detailed Explanation:
Starting with "The need for a scientific understanding...":
- (D) "of phenomena like climate change, biodiversity, and conservation" logically follows "understanding" (Understanding OF something).
- (C) "of natural ecosystems including forests was the main objective of" continues the list of objects and provides the main verb "was".
- (A) "the Rio Earth Summit, the first of its kind" identifies the subject of the objective.
- (B) "involving world leaders on environment and development" adds descriptive detail to the Summit.
Full sentence: "The need for a scientific understanding of phenomena like climate change, biodiversity, and conservation of natural ecosystems including forests was the main objective of the Rio Earth Summit, the first of its kind involving world leaders on environment and development."
Step 3: Final Answer:
The correct order is D-C-A-B.