The correct answer is A) the clouds make patterns.
The phrase "Clouds quilt the sky" means that the clouds make patterns.
When the author uses the word "quilt," it tries to convey the idea of two pieces stitched together, to form another part. In this case, "while the clouds quilt the sky," as the sentence says, the author uses a metaphor to describe the way clouds "melt" and make new patterns in the sky. It is common that authors use metaphors and other literary elements in their writings to create more interest in the readers.
