The answer to your question should be : B since its in the rocky mountains
Depending on the context (also: historical time) of the situation, mutual agreement between the two places and the terms actually used in their legal documents, it could be:
a dependency
a colony
a territory (for example: Puerto Rico is an unincorporated US territory)
and some others: people in the past have used different words to mask the fact that they dominate another country against their will...
Answer:
A population-D
Explanation:
A population is referred to a large collection of individuals or objects that is the main focus of an experiment or scientific research query. It is also called A research population because it considers a defined collection of individuals or objects who have similar binding characteristics.
Professor DeVries randomly selected and interviewed 50 of the school's students of Oakbridge School. He is using a well defined collection of student with same characteristic ie same school . His study is using a Population. Note that "random" here implies a subset of a population.
The study of rock layers in geography