Final answer:
To 'share a border' means that two adjacent territories have a common boundary, whereas compulsory voting, which is enforced in Brazil, means that citizens are legally obligated to vote.
Step-by-step explanation:
To "share a border" means having a common boundary between two countries, regions, or territories. When we talk about countries sharing borders, it implies that they are adjacent to each other with a delineated boundary that is recognized internationally. For instance, Canada and the United States share the longest international border in the world.
Compulsory voting is a system where eligible citizens are required to vote in elections. In Brazil, compulsory voting is a part of the democratic process, mandated by law for all citizens between the ages of 18 and 70. Those who do not vote must provide a valid justification or face a small fine. This ensures high voter turnout and portrays the country's emphasis on civic participation. Hence, the correct answer to the question is 'b) Sharing a border means having a common boundary. Compulsory voting is required in Brazil for all citizens.'
Voting and political participation are vital elements of a democracy, allowing citizens to express their will and contribute to the governance of their country. Voting can be a strategic behavior to influence election outcomes or an expressive behavior demonstrating personal values and identity.