Answer:
C. A company in Maryland suing a man in California over a contract dispute.
The main reason why United States was involved in Vietnam is that the United States believed in the so called Domino effect: that if one country becomes communist, others might become communist too. So they got involved to stop the spread of communism (option a)
I believe the answer is: A. human resources.
In current understanding, human resources could be divided into intellectual resources (such as creative thinking or long-term planning) and physical resources (that include manual labor such as operating machines or setting up roofs on a building)<span />
One of the ways to assess whether or not a learning game is effective is B. doing a quiz before and after the game to see what you have learned.
The point of a learning game is of course to learn something, so giving your students a quiz before and after the game will show how much they have progressed.
