Question

what does the root cred mean in the word credulous?
mary often fooled her credulous younger brother.
bother praise believe doubt

Explanation:

The root "cred" comes from Latin. Words like "credible" (believable) and "credit" (trust in someone's ability to pay) also have this root. In the context of "credulous" (where Mary fooled her credulous brother), it implies a sense of being too ready to believe.

Answer:

believe