Which federal state is Baden-Württemberg?

EDITORIAL LEARNING AID

Why is this answer correct?

On the map in the questionnaire, Baden-Württemberg is marked with the number 2. The state lies in the south-west of Germany and borders France and Switzerland. The other numbers designate other federal states.

South-west, border with France: number 2.

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