I would say its option C.
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i hope this helps my dudette
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Zane
THE ANSWER IS A BECAUSE ITS THE MOST LOGICAL ANSWER OUT OF ALL THE CHOICES
It seems that you have already filled the correct pronoun in the blank provided. Yes, the correct answer to complete this sentence is the pronoun "this". The pronoun "this" is an example of a demonstrative pronoun. Other demonstrative pronouns also include these, those, and that. Hope this answer helps.