The correct answer is Baroda.
Baroda was a princely state in India that existed from the 18th century until 1949. It was ruled by the Gaekwad dynasty, who were Marathas. The capital of Baroda was Vadodara.
In 1948, Baroda was merged with Bombay State. This was part of the process of integration of the princely states into the Indian Union.
Rajpipla was a princely state in India that existed from the 16th century until 1949. It was ruled by the Jadeja dynasty, who were Rajputs. The capital of Rajpipla was Rajpipla.
Idar was a princely state in India that existed from the 16th century until 1949. It was ruled by the Jadeja dynasty, who were Rajputs. The capital of Idar was Idar.
Junagadh was a princely state in India that existed from the 16th century until 1947. It was ruled by the Babi dynasty, who were Muslims. The capital of Junagadh was Junagadh.
In 1947, Junagadh acceded to Pakistan. However, the people of Junagadh were Hindu and did not want to join Pakistan. The Indian government sent troops into Junagadh and annexed it to India.