A source is something that is used to learn information on a topic. In this case, Steve needs something that will help him learn about different extinct animals.

Of our answer choices, the best answer is an article that discusses various extinct animals. A chart the includes pictures of extinct animals wouldn't provide enough information to write a report. Also, the report is on more than just one endangered animal; thus, information only on the Bald Eagle would not be as helpful as an article that discusses several endangered animals.