Salutations!
You can often tell what a word means by its context in a sentence. A context is a specific word or phrase that is followed along the paragraph, it helps you give a slight idea about the word.
Thus, your answer is option C.
Hope I helped (:
Have a great day!
The answer is going to be D
Please show us the list you're referring to.
The excerpt that indicates that King Arthur knows Queen Guinevere has been unfaithful to their marriage is <span>"To warn you."
</span><span>He is trying to warn her, as the quote says, about her infidelity. </span>