Correct sentence: “Lying on the grass, a snake bit him.”

The original sentence, 'Lying on the grass, a snake bit him,' contains a dangling modifier. The introductory phrase 'Lying on the grass' incorrectly suggests that the snake was lying on the grass, not the person. The phrase must logically modify the subject immediately following it.

• The correct sentence is 'Lying on the grass, he was bitten by a snake.' Here, 'Lying on the grass' correctly modifies 'he,' clarifying that the person was the one on the grass.
• Option A, 'Lying on the grass, a snake was bitten by him,' still implies the snake was on the grass.
• Option B, 'A snake bit him lying on the grass,' is grammatically correct but changes the sentence structure significantly and doesn't directly address the dangling modifier in the initial position as effectively as option C.
• Therefore, option C provides the most accurate and grammatically sound correction.