For how many years is the state parliament in Lower Saxony elected?

EDITORIAL LEARNING AID

Why is this answer correct?

The state parliament in Lower Saxony is elected for five years; after that the next state election takes place. The figures 3, 4 and 6 do not match the electoral term in Lower Saxony and are therefore wrong.

Five years of state parliament – then there is a new election.

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