Correct Answer: (a) Odisha
Note: Raja Parba, also known as Mithuna Sankranti, is a three-day-long festival of womanhood celebrated in Odisha, India. The word 'Raja' is derived from the Sanskrit word Rajaswala means a menstruating woman. At this time, the Goddess Earth is given rest and all agricultural activities, like digging the soil, and ploughing the field, are suspended. It is believed that after this, the earth becomes even more fertile.