What is the primary process responsible for the formation of a tombolo?

💡 Solution & Explanation

A tombolo is a coastal depositional landform created when wave refraction and longshore drift deposit sand and shingle to connect an offshore island to the mainland. Incorrect choices list unrelated geomorphic processes such as wind deflation, glacial plucking, or river delta formation. This feature develops where wave energy is reduced behind an obstacle. The Rock of Gibraltar features a classic tombolo connecting its limestone promontory to the Iberian Peninsula.