Final answer:
The letter C identifies the location of the Aztec civilization in central Mexico.
Step-by-step explanation:
The letter that identifies the location of the Aztec civilization is C. The Aztecs were a Mesoamerican civilization that flourished in central Mexico from the 14th to the 16th centuries. They built their capital city, Tenochtitlan, on an island in Lake Texcoco, which is now modern-day Mexico City.
Learn more about Location of the Aztec civilization