What is Germany not?

EDITORIAL LEARNING AID

Why is this answer correct?

Under Article 20 of the Basic Law, Germany is a democracy, a state based on the rule of law, a social state and a federal state. Germany is not a monarchy, because the head of state is elected and not determined by succession.

Germany is a democracy, rule-of-law and social state — not a monarchy.

This translation and explanation are editorial learning aids. The official German wording and answer key govern the examination.