For which group did Gandhi use the term Harijan?

A. अछूत माने जाने वाले समुदाय / Communities treated as untouchables

Step 1: Identify the concept: this is a social reform term. Step 2: Gandhi used Harijan for communities treated as untouchables, though the term is debated today. Step 3: Remember it with Gandhi's anti-untouchability campaign.

Step 1: अवधारणा पहचानें: यह social reform term है। Step 2: Gandhi used Harijan for communities treated as untouchables though the term is debated today. Step 3: इसे Gandhi's anti-untouchability campaign से याद रखें।