What best summarizes the central idea of the passage from "How the Internet and Other Technologies Came About"?

The right answer for the question that is being asked and shown above is that: "Technological advancement is a side effect of economic competition between countries."

These are the following choices:

Technological advancement is a side effect of military efforts to win wars.

Technological advancement is a side effect of academic competition between countries.

Technological advancement is a side effect of economic competition between countries.

Technological advancement is a side effect of profit-driven corporations.