For how many years is the state parliament in Bremen elected?

EDITORIAL LEARNING AID

Why is this answer correct?

The Bremen Bürgerschaft is elected for four years. Three, five or six years do not correspond to the Bremen constitution; five years, for example, applies in Hamburg.

Bremen elects every four years – shorter than most states.

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