The answer is: b. The Soviet Union fell apart
Before Gorbachev's reforms exist, several territories in soviet union was united under one principle of communism.
When the Gorbachev's reforms were created, the soviet union started to adopt some of democratic and free market value that adopted by countries in western hemisphere.
When this happen, the bind that united territories in the soviet union no longer exist. This became one of the factors that caused the soviet union to fell apart.
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.
President Richard Nixon proposed the development of the Environmental Protection Agency
