Which school-leaving qualification does one normally need to begin studying at a university in Germany?

EDITORIAL LEARNING AID

Why is this answer correct?

Studying at a university normally requires the general higher education entrance qualification, the Abitur. A Diplom is a university degree, the Prokura is a commercial power of attorney, and the journeyman's examination concludes a craft apprenticeship.

University: Abitur (general higher education entrance qualification).

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