I would either answer sanitation(pollution) or corruption
Answer:
Some people in Quebec want to separate from CANADA because their heritage and culture make them a minority.
Explanation:
Quebec Sovereignty Movement was a political movement for the independence of Quebec from Canada.
It was first started in 1960's. The main reason behind it was that people believed that English Canadian domination of the confederation was the cause for economic difficulties of Quebic. However, in late 20th century, economics conditions of Quebic started to improve, and the sole motivation left behind the movement was the difference of culture and heritage, which made them a minority.
Your best probable answer would be B. because tectonic plates are pretty much the reason why Central America has over a dozen mountains.
“One thing that is poorly understood is population growth in Africa,” says William Cobbett, director of Cities Alliance . “It is thought that populations are growing mainly because of urban migration. That’s not correct. Across the continent, the bulk of population growth comes from natural population growth. Undesa figures from 1950-2050 show that in the case of Uganda – the outlier – its population in one century will multiply 20 times. That has never happened in human history.” Tanzania will grow 18 times and Nigeria 10.5.
“Most local authorities don’t have the capacity to deal with this, so there is no forward planning to make provisions for this population growth, which we know is going to happen.”
His organisation is trying to combat the mindset that you can’t plan for increased slum population, by supporting the creation of municipal development forums in a number of Ugandan cities. These are structured discussions where the local authority, local private sector companies and slum dwellers meet and deliberate about the future of the city.
Having the capacity to plan for future slum populations isn’t just a problem limited to Africa though.
I think the phrase you are looking for is "natural resources" - these include fresh water, food and fertile soil on which crops can easily be planted.