The correct answer is the divergent boundary.
A divergent boundary, in plate tectonics refers to a linear characteristic, which prevails amid the two tectonic plates that are moving away from each other. The Mid-Atlantic Ridge and the Great Rift Valley are the examples of divergent boundaries.
Iceland is an illustration of a country going through a continental divergent boundary. The Mid-Atlantic Ridge differentiates Iceland and is the boundary between the Eurasian and the North American tectonic plates.