In which Sathyagraha did Gandhiji interfere for labours in factory for the first time?

In which Sathyagraha did Gandhiji interfere for labours in a factory for the first time?
A) Champaran
B) Kheda Sathyagraha
C) Bardoli
D) Ahmedabad
Answer: Ahmedabad

Ahmedabad Mill workers Satyagraha is for a wage increase.

Exam Tips
Champaran Satyagraha  is the Gandhi's first satyagraha

Champaran Satyagraha is related to the growing of Indigo

When was the word “satyagraha” used for the first time?
In Anti Rowlatt Act agitation

Who was the leader of Bardoli Satyagraha?
Sardar Vallabhbhai Patel

Bardoli Satyagraha is a part of civil disobedience movement

Kheda Satyagraha ( Gujrat) – it is major Tax revolt