Final answer:
The most recent evidence of plate tectonics is volcanic activity and sea-floor spreading at the mid-ocean ridges.
Step-by-step explanation:
The MOST recent evidence of plate tectonics is A) volcanic activity and sea-floor spreading at the mid-ocean ridges. This evidence is supported by the constant eruption of volcanoes and the spreading of the ocean floor, which occurs at the divergent plate boundaries. This phenomenon provides concrete proof of the movement and interaction of Earth's tectonic plates.
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