Which of the following is not part of the executive in Germany?

EDITORIAL LEARNING AID

Why is this answer correct?

Courts exercise judicial power and belong to the judiciary (Art. 92 GG). The police (a), the tax office (c) and the ministries (d), by contrast, are part of the executive, that is the implementing power.

Courts are the judiciary, not the executive.

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