Question

what is an important question to ask when evaluating a source? where is the author from? is the author an expert? how old is the author?

Explanation:

When evaluating a source, the author's expertise is relevant as it affects the credibility and accuracy of the information. The author's location or age are not as directly related to the quality of the source's content as their expertise. So "Is the author an expert?" is an important question.

Answer:

B. Is the author an expert?