Fill in the blank with the appropriate foreign word.

Ms Samta Ruth Prabhu has established her position as a _______ celebrity.

bona fide

The correct answer is Option (4) - bona fide

Ms. Samta Ruth Prabhu has established her position as a bona fide celebrity.

Explanation of all options:

1. Bonjure: This is not a correct term in any known language. It seems like a misspelling or incorrect combination of words. It might be confused with "bonjour," which is French for "hello," but that would not fit the context of the sentence.

2. Bon appetite: This is a misspelling of "bon appétit," which is a French phrase used to wish someone an enjoyable meal. This does not fit the context of the sentence.

3. Bon fire: This is a misspelling of "bonfire," which refers to a large open-air fire used for celebration or as a signal. It is unrelated to describing someone's established position.

4. Bona fide: This is a Latin term meaning "in good faith" and is used to indicate authenticity or genuineness. In the context of the sentence, it means that Ms. Samta Ruth Prabhu is recognized as a genuine or legitimate celebrity.