Final answer:
All options listed (Akkadians, Assyrians, Babylonians, Sumerians) were part of Mesopotamia, so the correct answer is 'f. none'.
Step-by-step explanation:
The cultures that were part of Mesopotamia included the Akkadians, the Assyrians, the Babylonians, and the Sumerians. These cultures were concentrated in southern Mesopotamia, with the Sumerians being one of the most significant civilizations in the region. The Akkadians emerged around 2400 BCE and established the first lasting Mesopotamian empire, eventually adopting Sumerian deities and replacing the Sumerian government and language. The Assyrians and Babylonians both adapted and extended the Sumero-Akkadian heritage, contributing to the famous cities and cultural achievements of the region. Therefore, all options listed (a. Akkadians, b. Assyrians, c. Babylonians, d. Sumerians) were indeed part of ancient Mesopotamia, making 'f. none' the correct choice for cultures not part of Mesopotamia among the given options.