Final answer:
The principle that states all adult citizens can vote is known as Universal Suffrage. This principle ensures the right to vote without discrimination and is a fundamental aspect of representative democracy. The 'one person, one vote' doctrine emphasizes that all citizens' votes should have equal value.
Step-by-step explanation:
The principle that states that all adult citizens of a country have the right to vote is called c) Universal Suffrage. This idea is fundamental to democratic nations across the globe and ensures that every adult citizen has an equal opportunity to participate in the voting process, which is a vital aspect of political participation. The term universal emphasizes that the right to vote should not be restricted by factors such as race, gender, or social status.
When considering the concept of "one person, one vote," the best explanation is d) All people's votes should count equally. This principle is essential in maintaining the integrity of the voting process, ensuring that each individual's vote has the same weight and significance in deciding the outcomes of elections and referendums.
The right to vote, though not explicitly stated in the US Constitution, is considered a fundamental right that is implicit in the principles of the United States' style of democracy. In fact, various amendments and legislations such as the 14th Amendment's equal protection clause have been used to reinforce this right and ensure its fair application across states.
Moreover, laws such as the c) National Voter Registration Act, commonly known as Motor Voter Act, have been implemented to simplify the voter registration process, making it easier for citizens to exercise their fundamental right to vote.