What is one of the primary roles of the European Commission?

One of the primary roles of the European Commission is to propose new European laws. This function is essential as the Commission acts as the executive branch of the European Union and is responsible for initiating legislation. By putting forward proposals, the Commission sets the legislative agenda for the EU, which helps to address common issues and challenges faced by member states. These proposals can cover a wide range of areas, including economic policy, environmental regulations, and social standards, reflecting the interests and needs of the Union's citizens.

The other roles mentioned, while important, do not align as closely with the primary responsibilities of the European Commission. The Commission does represent the EU internationally in discussions with other countries and organizations, supervises the adherence to EU law, and supports national courts with legal advice. However, proposing new legislation is the core activity that enables the Commission to fulfill its role as a driving force in shaping EU policy and laws.