Step 1: Understanding the Question.
The question is asking about the year in which the Kokborok literary work "Koklob Laikwrang" was published.
Step 2: Identifying the Correct Year.
The correct year of publication for "Koklob Laikwrang" is 2005.
Step 3: Analyzing the Options.
- (1) 2005: This is the correct answer based on the historical publication date.
- (2) 2006: This is incorrect, as it doesn't match the publication year.
- (3) 2007: This is incorrect, as the book was published earlier.
- (4) 2004: This is incorrect, as the book was published after 2004.
Step 4: Conclusion.
Thus, the correct answer is (1) 2005.