Answer : 1. "मेक्सिको"
Explanation :

Chichen Itza is located in (A) Mexico.

Chichen Itza is a famous archaeological site and ancient city located in the Yucatán Peninsula of Mexico. It was a major center of the Maya civilization and is renowned for its well-preserved pyramid, known as El Castillo. Chichen Itza is recognized as a UNESCO World Heritage Site and is one of the most visited archaeological sites in Mexico, attracting tourists and researchers interested in exploring the rich history and architecture of the Maya people.