Question

Zoe has been doing research on her topic for a while and finally came across an online resource that looks promising. The only problem is that she can't figure out whether it's credible. What is one clue she could look for to help her determine this?
A.
She could make sure there are ads on the page.
B.
She could search for an author or a list of sources.
C.
She could check that there's no date of modification.
D.
None of these will help determine the credibility of the resource.