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The original bold phrase "from debris as a collision between" contains a grammatical error. The word "as" is not appropriate in this context, as it implies simultaneity rather than causation. Option 3, "from debris following a collision between," correctly conveys that the Moon formed from debris that resulted after the collision. It maintains clarity and grammatical accuracy. For decades, scientists believed the Moon formed from debris following a collision between a young Earth and another celestial object.