Step 1: Identifying the author.
The work "Kokborok kokbwkhal bwchap" is written by Kumud Kundu Choudhuri.
Step 2: Analyzing the options.
- (1) Suranjan Kundu Chaudhuri: Incorrect, not the author of the work.
- (2) Snehamo Roy Chowdhuri: Incorrect, this is not the correct author.
- (3) Nitai Acharya: Incorrect, does not match the author of the work.
- (4) Kumud Kundu Choudhuri: Correct, this is the author of the work "Kokborok kokbwkhal bwchap".
Step 3: Conclusion.
Thus, the correct answer is Kumud Kundu Choudhuri.