Which characteristic was shared by the Aztec and Mayan civilizations, given these choices from the source list: 1) Produced potatoes as a main crop 2) Believed in only one deity 3) Located in rainforest 4) Constructed pyramids? (A) 1 (B) 2 (C) 3 (D) 4

What the question is really asking

You are looking for a trait that is true for both civilizations, not just one of them. So you can check each numbered statement and see whether it matches both the Aztec and the Maya.

Checking each source-list characteristic

1) Produced potatoes as a main crop: Potatoes are most strongly associated with the Andes (especially the Inca). The Aztec and Maya relied more on crops like maize (corn), beans, and squash.

2) Believed in only one deity: Both civilizations were polytheistic, meaning they worshipped many gods, not just one.

3) Located in rainforest: The Maya had major city-states in tropical lowlands, but the Aztec were centered in central Mexico around Tenochtitlán, which is not a rainforest region.

4) Constructed pyramids: This matches both. The Maya and the Aztec built stepped pyramids and temple complexes for religion and ceremonies.

Final choice

Because only statement 4 applies to both civilizations, the correct answer is D (4).