Coral reefs are home to more than a third of all the fish species. But people couldn't care less, and it shows. One issue affecting coral reefs is marine debris. Lost fishing gear and nets can entrap sea animals. Old lobster traps wash against coral and cause serious damage. Pollution in the form of plastics, tires, cans, and hygiene items also harms reefs.

Reread the sentence from the passage.
"But people couldn't care less, and it shows."
Which revision best expands the sentence to create a more formal style?

A. Despite this fact, humans care more about themselves than protecting reefs.

B. Over time, coral reefs have been damaged by human activities.

C. People and the stuff they do have been ruining coral reefs for years now.

D. So, it’s crazy that we don’t think about how our actions harm them.