This is called monogamy as opposite to polygamy (multiple spouses at the same time).
D - Check and balances.
This is a basic fundamental system of the American government, as it prevents corruption within, as each branch has its own way to check on other branches and balance the powers as a whole, hence the term "checks and balances".
↪Margaret Sanger Award
↪ The Marcus Garvey Prize for Human Rights
↪ Presidential Medal of Freedom
Earthquakes happen if parts or fault lines of the earth's crust move
Answer:
I think the first one is b and i think the second one is c
Explanation: