Which of the following varies daily? a: ) shorelines b: ) shore c: ) coastline d: ) beach

I believe that the answer is the shore line. A shore or a shoreline is the fringe of land at the edge of a large water body of water, such as an ocean, sea, or lake. In physical oceanography it is the wider fringe that is geologically modified by the action of the body of water past and present, while the beach is at the edge of the shore.

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