• "quiet" - yes that one looks right
• "beleive" - hmm when i say it in my head something seems off...ah yes, it should be "believe"
•  "proceed" - yep the spelling looks correct
• "precede" - also seems right
• "opportunity" - spelling looks good here too.

So through a process of elimination, the only word that is misspelled is B."beleive".

It's missing the "i" and should be "believe" instead.