I think the answer would be D.
"Domestic trade, also known as internal trade , is the exchange of domestic goods within the boundaries of a country."
Answer:
ensures that conditions in an organism do not vary too much above or below their set points
Explanation:
Homeostatis is the internal default state of an organism. When there is a change in the variables affecting the human body there are two ways by which it reacts
Positive feedback: Where the variable causing a change is further caused to change
Negative feedback: Where the variable causing a change is not allowed to cause change in the organisms body beyond a certain point.
Hence, the option "ensures that conditions in an organism do not vary too much above or below their set points" is the correct option.
The answer is selective incorporation which is letter b. It is
a principle written into the Constitution that safeguards American citizens
from their states’ ratifying of laws that could break upon their rights.
Selective incorporation is not an act or a law, but a doctrine that has been recognized
and established time and again by the United States Supreme Court. Fundamentally,
selective incorporation allows the federal government to place limitations on
the states’ lawmaking power.