Which of these is a district (Landkreis) in Saxony-Anhalt?

EDITORIAL LEARNING AID

Why is this answer correct?

The district of Börde lies in the fertile Magdeburg Börde in the middle of Saxony-Anhalt. Ammerland belongs to Lower Saxony, Altötting to Bavaria and the Uckermark to Brandenburg.

Börde is the name of the fertile soil around Magdeburg.

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