Answer:
c. The European Parliament
Step-by-step explanation:
The European Council is a collective body that defines the European Union's overall political direction and priorities.
The European Commission is the executive branch of the European Union, responsible for proposing legislation, implementing decisions, upholding the EU treaties and managing the day-to-day business of the EU.
The European Parliament (EP) is the legislative branch of the European Union.
Based on the defined roles of the different bodies of the EU, in order for France, Belgium and Finland to resolve their concerns which is a legal matter, their representatives will approach the legislative body of the EU to discuss their concerns with other EU members. This legislative body is the European Parliament.