The most relevant response to analyze why language was an important impact of the Aztec is:
Aztec words are still used today, such as chocolate.
This response highlights the lasting influence of the Aztec language, Nahuatl, on modern language and culture. The incorporation of Aztec vocabulary into contemporary language signifies the enduring legacy of the Aztec civilization and demonstrates how their language has contributed to global culture. Words like "chocolate" are not only elements of culinary culture but also reflect the historical significance of the Aztec civilization and its interactions with other cultures.