A. A was deposited most recently in the diagram above, as it is located in the top, showing that is the newest layer to be added.
I am pretty sure it is C but correct me if I'm wrong hope this helps.
The answer is D. Exosphere
Exosphere is the outermost Layer of the Atmosphere that goes out about 500 - 10,000 Km in altitude.
It's the place where satellites and the space shuttle orbit the earth. Because it's difficult to define the boundary between exosphere and the outer space, exosphere may be considered as a part of outer space
The USA DOES not have an official language! English is a popular language, but no where in any legal text declares that there is an official language.
