Final answer:
The correct order of the apartments by their price per square meter is Apartment AAA, Apartment CCC, Apartment BBB.
Step-by-step explanation:
The correct answer is C. Apartment AAA, Apartment CCC, Apartment BBB. To order the apartments by their price per square meter, we need to compare the prices for each apartment.
Apartment AAA has the lowest price per square meter, followed by Apartment CCC, and then Apartment BBB.
Therefore, the correct order is Apartment AAA, Apartment CCC, Apartment BBB.