Rearrange the following sentences to form a coherent paragraph:
1. A key strategy is to diversify energy sources, transitioning from fossil fuels to renewable alternatives like solar, wind, and geothermal power.
2. To mitigate the worst effects of climate change, the global community must drastically reduce its reliance on carbon-intensive energy production.
3. This shift not only decreases greenhouse gas emissions but also improves air quality and creates new economic opportunities.
4. Additionally, policies that promote energy efficiency in buildings and transportation can further lower overall energy consumption.

Correct option is A

The correct sequence is 2, 1, 3, 4.
Explain the correct sequence of each sentence:
· (2) is the best opening because it introduces the main idea/problem + need: reducing reliance on carbon-intensive energy to mitigate climate change. It sets the context for the paragraph.
· (1) follows naturally as it gives the first key strategy to achieve what sentence (2) demands—diversifying energy sources and shifting to renewables.
· (3) must come next because the phrase “This shift” clearly refers to the shift mentioned in sentence (1) (from fossil fuels to renewables). It explains the benefits/results of that shift.
· (4) is placed at the end because it begins with “Additionally”, which signals an extra supporting measure beyond the renewable shift—energy efficiency policies to reduce consumption further. This works as a concluding addition.
How to identify the correct order (connectors / clues):
· Cause/need statement first: Sentence (2) gives the main objective.
· Strategy next: Sentence (1) provides “A key strategy…”—it must follow the objective.
· Reference word clue: “This shift” (3) must follow the sentence that mentions the shift (1).
· Add-on marker: “Additionally” (4) usually appears after one main strategy is explained, adding another supporting point.