The chapter “Indigo” is written by Louis Fischer and describes Mahatma Gandhi’s struggle for justice in Champaran.
Step 1: Understand the background.
The lesson “Indigo” is taken from Louis Fischer’s book “Men and Politics.” It highlights Gandhi’s leadership and his fight against the exploitation of farmers by British landlords.
Step 2: Analyze the options.
(A) Men and Politics: This is correct because “Indigo” is an excerpt from this book written by Louis Fischer.
(B) Life of Lenin: This book is not related to Gandhi or the Champaran movement.
(C) The Life of Mahatma Gandhi: Although related to Gandhi, this is not the source of the chapter.
(D) None of them: Since option (A) is correct, this option is incorrect.
Step 3: Conclusion.
Therefore, the correct answer is (A) Men and Politics.
Final Answer:
\[
\boxed{(A) \, \text{Men and Politics}}
\]