Respuesta :
The correct answer is B, as it is the clouds ability, therefore making it "their". It can be inferred that she is making it rain where the mountains are, so it is not necessary to include that in the answer.
The answer is B: She ruled the bright clouds that gleam in the summer sky and caused them to pour their showers on meadow, forest, and mountains. "and mountains" is more simple and natural and follows the pattern of "forest" and "meadow." In C, the word Summer should be in low-case initial (summer). In D, the correct way to write the pronoun is their and not they're.