Read the following passage:
In a lush forest, the sunlight streamed through the leaves, casting intricate patterns on the ground. Birds chirped a melodious tune while a gentle breeze rustled the branches above. The air was filled with the fragrant scent of wildflowers, cascading down the hills. In the midst of this serene environment, a small stream flowed quietly, reflecting the beauty of nature surrounding it.
Which of the following describes the structure of the passage?