C I think. Not Sentence fragment I think and definitely not complete sentence. :P
I would say a but i don't know. I am not for sure.
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Answer:
Consonance is the repetition of consonant sounds in words that are close to one another in a piece of text such as; Peter Piper picked a peck of pickled peppers
Assonance is the repetition of vowel sounds, sometimes creating end rhymes
Explanation:
Be igniting the doubt for the person talking to them or telling them the truth