Which among the following measures helped to create a sense of collective identity among the French people during the French Revolution?

The correct option is D Adoption of a uniform system of weights and measures.
From the beginning of the French Revolution, the French revolutionaries introduced various measures and practices that could create a sense of collective identity amongst the French people. For example, regional dialects were discouraged, and French was made the common language. The former royal standard was replaced with a new tricolour French flag. The collective identity was made stronger with a centralised administrative system with uniform laws for all citizens, like abolishing internal customs duties, dues, and different units of measurement. The revolutionaries also declared that they were going to liberate the rest of Europe from despotic rulers and regimes.