Answer:
Voter registration (or enrollment) is the requirement that a person otherwise eligible to vote register (or enroll) on an electoral roll before they will be entitled or permitted to vote. Such enrollment may be automatic or may require application being made by the eligible voter. The rules governing registration vary between jurisdictions. Some jurisdictions have "election day registration" and others do not require registration, or may require production of evidence of entitlement to vote at time of voting. In some jurisdictions registration by those of voting age is compulsory, while in most it is optional. In jurisdictions where registration is voluntary, an effort may be made to encourage persons otherwise eligible to vote to register, in what is called as a voter registration drive.
Explanation:
Since parts of China and North Vietnam were already communist, the United States was afraid that communism would spread throughout Asia. So, they decided to send money, supplies, and military advisers to help the South Vietnamese Government.
Pretty much all abled men of age were drafted into war, especially those of the lower classes.
Of course, wealthier men who had more money would often buy their way out of fighting in the war. Women on the other hand had no such requirements as their male counterparts, and in some cases, they weren't even allowed to join the military.
This wasn't a fair system, because far more men were losing their lives than women, (Not that women are more deserving of dying than men. No one should have to fight in a war against their will.) and only if a man had the money, was he allowed to basically, live.
The correct answer is C, How to satisfy unlimited wants with limited resources.