The festival dedicated to Lord Murugan, also a major festival in Tamil Nadu:

Karthigai Deepam
Bhogi
Deepavali
Thaipusam

The correct answer is: D) Thaipusam

Thaipusam is a major Hindu festival celebrated in the Tamil month of Thai (January–February). It is a day of penance and thanksgiving to Lord Murugan, the Hindu god of war and victory. Devotees pierce their bodies with vel (a vel is a lance or spear with a metal hook on one end) and carry milk pots on their shoulders as they walk in procession to a temple.

Karthigai Deepam is a Hindu festival celebrated in the Tamil month of Karthigai (November–December). It is a day of thanksgiving to Lord Shiva and Parvati, the Hindu god and goddess of destruction and creation. Devotees light lamps and offer prayers to the deities.

Bhogi is a Hindu festival celebrated on the last day of the Tamil month of Margazhi (December–January). It is a day of thanksgiving to the sun god, Surya, for providing light and warmth. Devotees clean their homes and discard old and unwanted items.

Deepavali is a Hindu festival celebrated in the Tamil month of Aippasi (October–November). It is a five-day festival of lights that celebrates the victory of good over evil. Devotees light lamps and candles, exchange gifts, and feast.