Which soil would most likely be found in the Arctic

Most probably Arctic has tundra type of soil. Tundra soils are formed at high latitudes & it is usually very cold in the tundra.

The type of soil most likely to be found in the Arctic is the Tundra Soil.

The Tundra, is a landscape, very cold, it creates unique patterns in the ground. During summer, water can accumulate underground, then freeze, which drives the soil upward into a small hill call a Pingo. Tundra soils are formed at high latitudes. Tundra soils are generally frozen, and are classifed as Gelisols.