Use the map below to answer the following question: This is a topographic map of modern Europe. Green represents flat land, while brown represents higher elevations, like mountains. Nations are labeled on the map, but political borders are not shown. Great Britain is primarily shaded green. Iceland is primarily shaded brown. The northern coast of Scandinavia is primarily shaded brown, with the remainder of the area shaded green. The Northern European Plain in primarily shaded green. The Iberian Peninsula is largely shaded brown, with smaller areas of green shading along the southern coastline. The Central Russian Upland is primarily shaded green.
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Which two European regions have the most similar physical geography? (5 points)

Great Britain and Iceland
Scandinavia and the Northern European Plain
The Iberian Peninsula and Great Britain
The Northern European Plain and the Central Russian Upland