Which of the following best describes a dictatorship?

A dictatorship is best described as a government led by a single leader with concentrated power. In this type of political system, authority is typically centralized in the hands of one individual or a small group, allowing them to make decisions without the same level of accountability to the public or legislative bodies that exists in democratic systems.

This concentration of power means that laws and policies can be enacted swiftly, as there is often no need for extensive debate or approval from a wider government structure. Dictatorships can arise in various forms, including military juntas or authoritarian regimes, where dissent may be suppressed and civil liberties restricted.

In contrast, the other options represent different forms of governance. A government ruled by elected representatives reflects a democratic system where leaders are chosen through elections and accountable to the electorate. A system with a separate judiciary indicates a separation of powers, a hallmark of many democracies aimed at preventing the abuse of power. A government run by royal lineage suggests a monarchy, where power is inherited rather than concentrated in a single ruler without a hereditary claim.