Final answer:
Multinational corporations are a crucial force behind the dominance of a few nations in the global marketplace, accumulating wealth and having significant influence over the economy without being limited by national borders. The correct option is D.
Step-by-step explanation:
Among the forces particularly responsible for the domination of the world marketplace by a few nations, the advent of multinational corporations is significant. These entities control assets, sales, production, and employment and operate with a large share of their capital collected from a variety of nations.
They partake in business activities without regard to national borders and play a key role in the global economy, concentrating wealth in the hands of core nations and wealthy individuals. As a result, they are a major force in the shaping of globalization.