Answer: D. Armenians
Explanation: Tamaz V. Gamkrelidze and Vyacheslav Ivanov proposed the Armenian speculation. The Armenian theory recommends that Proto-Indo-European was talked in Eastern Anatolia, Southern Caucasus and Northern Mesopotamia which are situated in the fringes of Europe and parts of Asia. It shows the general population went from Proto-Indo-European country to other neighboring parts of the world.