On whose advice did Mahatma Gandhi spend a year travelling around British India after he returned form South Africa in 1915?

Gopal Krishna Gokhale

The correct answer is Option (2) → Gopal Krishna Gokhale

Gopal Krishna Gokhale was the political mentor of Gandhi.
On Gokhale’s advice, Gandhiji spent a year travelling around British India, getting to know the land and its peoples.