The citizens of France, Belgium, and Finland are upset by a recent trade law enacted in the European Union which they feel negatively impacts their respective economies. In order to resolve their concerns, they would turn to.

The European Parliament to resolve their concerns.

Explanation:

The European Parliament bis the legislative section of the European Union. The European Parliament is made up of 705 members and is the 2nd largest parliament in the world.

When there is dispute with regards to EU laws the European Parliament is the body that resolves it. They help implement laws enacted by the European commission. They can amend or reject a legislature, and they also make proposal for legislation.

So citizens of France, Belgium, and Finland will approach the European Parliament when they are upset by a recent trade law enacted in the European Union which they feel negatively impacts their respective economies.

European commission for assistance

Explanation: The above countries would turn to the European Commission for assistance. It is the organization that these types of questions are addressed. It proposes laws, implements decisions, upholds treaties, and addresses the day-to-day affairs of the European Union. It therefore promotes the general interest of the European Union by proposing and enforcing legislation as well as the implementing of policies. Although the European Parliament has legislative power, as does the European Council, it does not formally possess legislative initiative. The legislative initiative is the sole prerogative of the European Commission. Therefore, if there's a dispute concerning the citizens of France, Belgium, and Finland wherein they're upset by a recent trade law enacted in the European Union, which they feel negatively impacts their respective economies, the European commission would be the go to body.