Step 1: Understanding the question.
The question asks for the novel that focuses on the life, challenges, and societal circumstances of the A’chik Nokma — the traditional village head or chief in Garo society.
Step 2: About the novel.
The novel Janggi Kom’chik Nokma Sakgni highlights the cultural, political, and personal aspects of the life of a Nokma, depicting the leadership and community responsibilities within Garo tradition.
Step 3: Analysis of options.
- (1) Chigitchakgreni Nokma: A separate story, not focused on Nokma’s life issues.
- (2) Gamseng: Deals with other thematic elements.
- (3) Janggi Kom’chik Nokma Sakgni: Correct; focuses on the life and struggles of the A’chik Nokma.
- (4) Dualgreni Me’chik: Unrelated to the Nokma’s role or leadership.
Step 4: Conclusion.
Thus, the correct novel that portrays the Nokma’s life and duties is Janggi Kom’chik Nokma Sakgni.