Read the excerpt from a report. (1) Stopping trash before it gets to the ocean is way better than having to clean it up in the ocean. (2) The city of Baltimore has a large machine called Mr. Trash Wheel. (3) The machine is powered by the sun and the flow of the river. (4) Floating booms off the front of the machine funnel garbage toward a conveyor belt. (5) The belt takes the garbage from the water and puts it in a dumpster. (6) The trash wheel helps collect garbage in the river after it flows out into the ocean.

Which revision improves the professional tone of the text?

Change sentence 1 to: “Preventing garbage from entering the ocean is more effective than removing waste from the sea.”
Change sentence 2 to: “The city of Baltimore has really cool machine called Mr. Trash Wheel.”
Change sentence 4 to: “Floating booms and a conveyor belt help the machine work its magic.”
Change sentence 5 to: “The belt takes a bunch of the garbage from the water and then tosses it in a dumpster.”