The correct answer is A) Malabar.
Theyyam is a ritualistic dance form mainly associated with the Malabar region of Kerala. It is a form of worship in which the performer, known as a Theyyam artist, enters a trance and becomes possessed by a deity. The dance is accompanied by music and drumming, and the artist often wears elaborate costumes and masks. Theyyam is a popular form of worship in Kerala, and it is performed at temples and other sacred sites.
B) Travancore is a region in Kerala that is known for its palaces, temples, and backwaters. It is also home to the Theyyam dance form, but it is not as widely practiced as in the Malabar region.
C) Kochi is a city in Kerala that is known for its history, culture, and food. It is also home to a number of Theyyam artists, but the dance form is not as popular in the city as it is in the Malabar region.
D) Idukki is a district in Kerala that is known for its mountains, forests, and tea plantations. It is not a major center for Theyyam, and the dance form is not as widely practiced there as it is in the Malabar region.