Elections are a <em>nonviolent method</em> by which power dynamics in the government change and they make a fundamental contribution to democratic governance.
Any democratic government is conducted through its representatives. Elections enable voters to select leaders and to hold them accountable for their performance in office. Regular and periodic elections solve the problem of succession in leadership as new/better leaders can always be elected through voting.
In democracies,<em> people have a say </em>when choosing a government. People conduct elections to safeguard their freedom and rights. The<em> mass participation of citizens</em> ( edible voters ) guarantees a peaceful change in government, and is an example of trust of the citizens in the elected government.
"A<span>s a refueling station for U.S. ships traveling to the Philippines" would be the best option from the list since Guam was only captured in the 20th century, which put the US into two world wars with reach into the Pacific.</span>