The correct answer is the following.
The Olmecs: C.
The Mayans: D
The Aztecs: B
The Incas: H
We are talking about Mesoamerican cultures that flourished in the region of Mexico, Central American and South America.
The Olmecs were the earliest civilization in the region of Mesoamerica. They developed its civilization in the low and humid areas of southern Mexico, in what today is Veracruz and Tabasco. The Aztecs were one of the most prominent empires of Mesoamerica. They settled in the center of the Mexican Republic, in what today is downtown Mexico City. It's capital city was the great Tenochtitlan. The Mayans were prominent mathematicians and astronomers that settled in the Yucatan peninsula in southern Mexico and some places in Central America territories such as Belize and Guatemala. The Incas was the most important civilization of its time in South America and settled in the great city of Macchu Pichu, in Peru.