The correct answer is A) Avanti.
Avanti was a powerful Mahajanapada located in Madhya Pradesh. It was one of the sixteen Mahajanapadas, or major kingdoms, of ancient India. Avanti was located in the Malwa region of central India, and its capital was Ujjain.
Avanti was a major power in ancient India, and it played a significant role in the development of Indian culture. The kingdom was known for its wealth, its military power, and its cultural achievements.
Avanti was eventually conquered by the Mauryan Empire, but its legacy continued to influence Indian culture for centuries.
The other options are incorrect.
Kosala was a Mahajanapada located in the Ganges River valley. Its capital was Ayodhya.
Vatsa was a Mahajanapada located in the Ganges River valley. Its capital was Kaushambi.
Anga was a Mahajanapada located in the Ganges River delta. Its capital was Champa.