Read the excerpt from a report. (1) Cleaning up the existing garbage in the ocean would begin to address the issue of climate change. (2) A company called the Ocean Cleanup Project has successfully developed a self-contained system that collects ocean garbage. (3) It uses the natural forces of the ocean to dump floating plastic. (4) The system consists of a thing, which holds a ten-foot screen below and catches the waste. (5) It would be awesome to have a bunch of these systems removing garbage.

Which revision improves the professional tone of the text?
Change sentence 1 to: “Cleaning up garbage in the ocean would be way better for the environment.”
Change sentence 2 to: “A company called the Ocean Cleanup Project has cleaned up a ton of ocean garbage.”
Change sentence 4 to: “The system consists of a big screen below it that catches the stuff.”
Change sentence 5 to: “Implementing several of these systems could remove garbage from the oceans.”