What’s a best practice to follow when researching online?

The correct answer is C. Use varied sources.

Using varied sources allows you to cross-check information, gain different perspectives, and ensure that you have a well-rounded understanding of the topic. Relying on a single source can lead to bias or incomplete information. Diversifying your research sources improves the accuracy and reliability of your findings. Keep up the great work in your studies! If you have more questions, feel free to ask!