The buffalo race festival held in coastal Karnataka:

The correct answer is A) Kambala.

Kambala is a buffalo race festival held in coastal Karnataka. It is a traditional sport that involves two buffaloes racing against each other through a muddy field. The race is usually held during the monsoon season, when the fields are wet and muddy.

Kambala is a popular event and attracts large crowds of spectators. The race is often accompanied by music and dance performances.

The following are brief descriptions of the other options:

• Theyyam is a ritualistic dance form performed in Kerala. It is a form of worship in which the dancers, who are possessed by the spirits of gods and goddesses, perform elaborate dances.
• Onam is a harvest festival celebrated in Kerala. It is a time for family and friends to come together and celebrate the abundance of the harvest.
• Garba is a folk dance form performed in Gujarat. It is a dance of joy and celebration that is often performed during the Navratri festival.