Gandhiji had proposed the path of non-violence.

Answer: Option B

Followed : go or come after (a person or thing proceeding ahead); move or travel behind.
Suggested : put forward for consideration.
Adopted : legally take (another's child) and bring it up as one's own.
Accepted : generally believed or recognized to be valid or correct.
Proposed : put forward (a plan or suggestion) for consideration by others.

Synonym of Proposed is Suggested