With the abbreviation "Stasi" people in the GDR meant …

EDITORIAL LEARNING AID

Why is this answer correct?

The Stasi was the Ministry for State Security, that is, the GDR's secret service and surveillance apparatus. The parliament was called the Volkskammer, and the ruling party was the SED. The Ministry for People's Education was the authority for schools and education.

Stasi = Ministry for State Security.

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