The statement that most accurately describes the differences between direct democracies and monarchies is:
"Direct democracies promote freedom of choice and voting rights while monarchies are led by a single ruler whose word is law."
In a direct democracy, citizens have the power to make decisions and vote on policies directly, promoting individual freedom and participation. In a monarchy, a single ruler, often a king or queen, holds significant or absolute power, making decisions that are law without direct input from the populace.