Difficulty: Easy
Correct Answer: out
Explanation:
Given data
Concept/ApproachFall out (with someone) = have a quarrel or disagreement; relationship breaks down.
Option analysisout — correct particle: "fall out." ✅apart — means disintegrate physically/emotionally, not specifically "quarrel".off — means decrease or depart; not the idiom for quarrelling.down — means collapse or reduce; not used here.
Usage example"They fell out over money."
Final Answerout
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