Which office is part of the municipal administration in Germany?

EDITORIAL LEARNING AID

Why is this answer correct?

The public order office belongs to the municipal or city administration and deals, for example, with trade, noise and public order matters. A parish office (a) belongs to a church congregation, the tax office (c) is a state authority, and the Federal Foreign Office (d) is a federal authority.

Public order office = municipality, tax office = state, Foreign Office = federal.

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