read the paragraph. then, add the best topic sentence. like a regular pipe organ, the wave organ has many…

read the paragraph. then, add the best topic sentence. like a regular pipe organ, the wave organ has many pipes of different lengths. however, the wave organs pipes go down into the water of the san francisco bay. as waves crash into the organ, the pipes make loud, echoing sounds. when water enters a pipe, it makes a higher sound. when water leaves the pipe, it makes a lower sound. the san francisco bay is sixty miles long. san franciscos wave organ turns the sounds of the ocean into music. there are many different kinds of musical organs.
Answer
Brief Explanations:
The paragraph focuses on the Wave - Organ in San Francisco Bay, how its pipes interact with waves to produce sounds. The first option is about the length of the bay, not related to the Wave - Organ's function. The third option is too general about musical organs and doesn't specifically address the Wave - Organ. The second option, "San Francisco's Wave Organ turns the sounds of the ocean into music", sums up the main idea of the paragraph as it highlights the unique function of the Wave - Organ.
Answer:
San Francisco's Wave Organ turns the sounds of the ocean into music.