Answer:
There
Explanation:
Great question, it is always good to ask away and get rid of any doubts that you may be having.
The Correct and only answer for the sentence given in the question is "There". From the four answers given, "There" is the only answer that makes factual and grammatical sense in the sentence displayed. Therefore it is the correct answer.
** "One" could work if you took out the "is" after it, otherwise it will just be grammatically incorrect. **
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