Explanation:

The Hornbill Festival is a renowned annual cultural festival celebrated in the Indian state of Nagaland. It is held every year from December $1^{\text{st}}$ to December $10^{\text{th}}$ at Kisama Heritage Village, near Kohima. The festival is a vibrant showcase of Nagaland's rich cultural heritage, bringing together all the Naga tribes to celebrate their traditions, music, dance, and food. It is named after the Indian hornbill, a bird revered by the Nagas. Options (2) Sikkim, (3) Meghalaya, and (4) Goa are other Indian states, but they do not host the Hornbill Festival. Therefore, (1) Nagaland is the correct answer.