Question

Global warming is a burning problem for this summit.

• A. A problem that is obvious
• B. An urgent, important problem
• C. A dangerous problem
• D. No correction required

Hint:

"Burning issue/problem" → urgent, pressing concern.

Answer 1

The Correct Option is B

The idiom "burning problem" refers to a very urgent and important issue, not merely obvious or dangerous. Hence, option (b) best explains it. \[ \boxed{\text{An urgent, important problem}} \]

Answer 2

Break the idiom "burning problem" into its two components — urgency and importance — and check which option captures both, rather than treating it as a single vague quality.

1. Option A: "obvious" only conveys visibility or being easy to notice, but says nothing about urgency, missing half the idiom's meaning.
2. Option B: "urgent, important" captures both components of "burning" — a pressing matter that demands immediate attention.
3. Option C: "dangerous" describes risk or harm, which is a different quality altogether from urgency or importance.
4. Option D: since "burning problem" is being tested for meaning, the idiom itself needs to be restated in plain words, so leaving it unexplained does not serve the purpose here.

Only option B fully captures both the urgency and importance carried by the idiom "burning problem."

Hence, the correct answer is An urgent, important problem.