Answer:c
Explanation: Population density is a measurement of population per unit area, or exceptionally unit volume; it is a quantity of type number density. It is frequently applied to living organisms, most of the time to humans.
The difference is:
1. An ecoregion is an area that is known for its environmental conditions, landscapes, and soil
2. A region is an area that is part of a country or some parts of the world
Quebecois French is b) diverged from Parisian French. However, this is only historically speaking and only pertains to the 17th century "koine" of Paris. Nowadays, the distinction between French from France and French from Quebec is huge and the accent stands out very strong compared to other dialects of French. However, the Quebecois are very proud of their language and do not want to standardize, as they feel it would be a removal of their culture.
Here's a photo of my work