Read this conclusion.

when people carelessly discard plastic, the word’s oceans suffer. marine life must share space with water bottles and sandwich bags. sea creatures often mistake plastic waste for food, and they suffer dire consequences. do not contribute to this growing problem.

which sentence best completes this conclusion with a relevant call to action?

a make an effort to properly dispose of plastic trash and recyclables.

b there is a growing island of plastic waste off the coast of california.

c plastic waste is not easily biodegradable, and it stays in the ecosystem.

d study the ocean and learn about the needs of endangered marine wildlife.