What is the name of the document, signed on February 5, 1917, that serves as the supreme law of the land and was the first in the world to include social rights such as labour protections and agrarian reform?

• A Constitution of 1824
• B Constitution of Cadiz
• C Constitution of Apatzingan
• D Constitution of 1917 ✓

The 1917 Constitution remains in force, establishing a presidential federal republic with three branches of government and guarantees of individual and social rights.