Explanation
A causeway is a raised path or road built across low or wet ground, such as marshes or water, to provide a dry, stable route. This definition directly matches option 1, while the other options describe unrelated geographical features.
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A causeway is a raised path or road built across low or wet ground, such as marshes or water, to provide a dry, stable route. This definition directly matches option 1, while the other options describe unrelated geographical features.