Read the excerpt:

Solar power is growing quickly in the Middle East because the region receives strong sunshine for most of the year. A solar panel converts light directly into electricity, with no fuel and no smoke. The main challenge is storage: the sun does not shine at night, so energy must be saved in batteries or used to heat materials that release the heat later. As storage becomes cheaper, solar power is expected to supply a bigger share of the region's needs.

Why is solar power growing quickly in the Middle East?

Answer and explanation

Correct answer: D. The region receives strong sunshine for most of the year

  1. Step 1: Find the relevant detail in the text: "the region receives strong sunshine for most of the year".
  2. Step 2: This detail answers the question directly.
Answer
The region receives strong sunshine for most of the year.
Why not the others: "The region has no other energy" is not supported by the text; "Panels are made there" is not supported by the text; "Batteries are free" is not supported by the text.

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