Answer:
c. It created the position of the president of the European Council.
Explanation:
The Treaty of Lisbon is an international agreement signed by the EU member states on 13 December 2007. This agreement provides the constitutional basis of the EU (European Union). The Treaty of Lisbon was initially known as the Reform Treaty.
The Treaty of Lisbon created the position of the president of the European Council.
Option c. is correct.