Question

identifying features caused by wave erosion
which photograph shows an example of a feature caused by erosion from waves?

Explanation:

Wave erosion often creates coastal landforms like sea arches (the top image shows a rock formation with an arch, typical of wave - eroded features). The other images don't show clear wave - erosion - caused landforms (e.g., the middle may be a rocky area without a distinct wave - eroded feature, the third a beach/coastline without an eroded structure, and the bottom a landscape with vegetation not related to wave erosion).

Answer:

The Top Graph