The correct option is B Extreme left
Sumit is at left end. Bindu isn't sitting with Sumit. Sunil is to right of Sunita so he can't sit to the right of Sumit. Sanjay is sitting next to Bindu and Sunil, thus he can't sit next to Sumit. Thus, Sunita is 2nd from left end. This means Sunil is 3rd from left end. This means Sanjay is 4th from left end. Thus, Bindu is 5th from left end.