The seat and working locations are two different kinds of information.
The exam uses “seat” in its institutional sense: the city formally designated for the institution. For the European Parliament, the answer is Strasbourg. It does not mean an individual member’s chair in the chamber.
Parliament also works in Brussels and Luxembourg. Reading a report about parliamentary work in Brussels therefore does not invalidate the answer Strasbourg. The report may concern another working location.
The other three answers
None of the other three cities offered is the European Parliament’s official seat.
London
London is not the designated seat of the European Parliament. A European city’s prominence does not determine this institutional role.
Paris
Paris is not the seat of the European Parliament. The precise city within France matters: the answer is Strasbourg.
Berlin
Berlin is not the European Parliament’s official seat. Do not confuse a European parliament with Germany’s national institutions.
Having several working locations does not make the seat information wrong.
The treaty arrangement names Strasbourg for regular plenary part-sessions, Brussels for additional plenary sessions and committee meetings, and Luxembourg for the General Secretariat. Not every one of these activities is a sitting of the whole Parliament.
A question about the seat requires one city. A different question about all working locations requires several cities. Read the precise wording before applying the place name you have learned.
The seat in Strasbourg · European Parliament ↗Official seat: Strasbourg. Other work also takes place elsewhere.
Remember “seat = Strasbourg” and add the three working locations when the question asks for them.
Three words for this question
- der Sitzofficial seat
- The formally designated location of an institution.
- die Plenartagungplenary part-session
- A period when the whole Parliament meets for debate and voting.
- der Ausschusscommittee
- A smaller group within Parliament working on particular subjects.