According to the Treaty of Lisbon and the mandate of the EU, what is the main function of the European External Action Service (EEAS)? option_A: Ensure coherence and coordination of the Union's international action. option_B: Manage its own resources from the EU budget independently without supervision by the Commission. option_C: Negotiate bilateral trade agreements directly with third countries without the involvement of the Commission. option_D: Execute exclusively military operations under the framework of the Common Security and Defense Policy (CSDP). Explanation: 1) The correct answer is A because the European External Action Service (EEAS) was established by the Treaty of Lisbon with the explicit mandate to contribute to coherence and coordination in the Union's international action. Official sources from EEAS confirm that its central role is to facilitate this coordination under the political direction of the High Representative. 2) Why the other options are incorrect: - Option D (Overgeneralization trap): While the EEAS supports the CSDP, it does not exclusively execute military operations; these require contributions from member states and the Commission in various aspects. Limiting its function to military operations alone is incorrect. - Option B (Incorrect metric trap): Management of the own resources from the EU budget is the responsibility of the European Commission and Parliament, not an independent function of the EEAS. - Option C (Partial truth trap): While the EEAS supports trade policy, negotiating bilateral trade agreements is an exclusive competence of the EU managed by the European Commission, not a task that the EEAS performs independently. Quick tip: Remember that the EEAS is the diplomatic 'connector' of the EU, not the sole executor of any specific policy; its value lies in global coherence.