The correct answer is A. Ottan Thullal.
Ottan Thullal is a solo dance form from Kerala, India. It is a vigorous dance that is performed by a male dancer who sings and recites poetry while he dances. The dance is accompanied by a drummer and a musician who plays the chenda, a traditional drum from Kerala.
Kuchipudi is a classical dance form from Andhra Pradesh, India. It is a duet dance that is performed by a male and a female dancer. The dance is based on stories from Hindu mythology and epics.
Yakshagana is a folk dance form from Karnataka, India. It is a group dance that is performed by a troupe of actors. The dance is based on stories from Hindu mythology and epics.
Odissi is a classical dance form from Odisha, India. It is a solo dance that is performed by a female dancer. The dance is based on stories from Hindu mythology and epics.
Ottan Thullal is a solo dance because it is performed by a single dancer. The other options are not solo dances because they are performed by a group of dancers.