Hey there,
I don't get your question but I can explain what a plateau is:
https://en.wikipedia.org/wiki/Plateau
Answer:
The unit of measure which should be used to describe the size of the galactic body mentioned in the question is
Astronomical Units.
Explanation:
Trying to measure the size of planets in Kilometers and Miles is futile as the numbers are too enormous.
Astrologists have invented metrics which keep it simple and one Astronomical Unit is equal to 149,597,871 kilometers (92,955 miles).
Cheers
Answer:
C. Replanting trees in a forest area that has been cut down.
Explanation:
Because that is replanting and conserving something necessary and a natural resource that was taken down.