The correct answer is option 1 - Hawaii.

Volcanic activity refers to the occurrence and eruption of volcanoes, which release molten rock (magma) and other volcanic materials onto the Earth`s surface. While volcanic activity can occur in various parts of the world, Hawaii is known for its high concentration of active volcanoes. The state of Hawaii is formed by a chain of volcanic islands located in the Pacific Ocean. This volcanic activity is a result of the movement of tectonic plates, specifically the Pacific Plate moving over a hotspot in the Earth`s mantle beneath the Hawaiian Islands. As a hotspot, Hawaii experiences frequent volcanic eruptions, making volcanic activity more common in this region compared to the other options mentioned (Japan, Colombia, and New Zealand).