Question

which word contains a word root that means believe?
credential
dictionary
dormant
genesis

Explanation:

The Latin root "cred" means "believe". "Credential" derives from "cred", referring to something that proves trustworthiness or belief in one's qualifications. Other options have unrelated roots: "dictionary" from "dict" (say), "dormant" from "dorm" (sleep), "genesis" from "gen" (birth).

Answer:

credential