A: The immigrant roots of its population.
Answer:
Exile means being sent away from the country or area where you live. People are usually exiled for political reasons or sometimes because they have committed a crime. They may have said bad things about the rulers in that country or tried to get into power themselves.
Answer:
All the planets have atmospheres, are made of rock of gas, and some have moons or rings.
Explanation:
Not all planets have moons and rings, they all have atmospheres.
Self evident should have a hyphen, buddy
Answer:
C. Children know much that grown-ups have long forgotten