Where was Mahatma Gandhi when a raid was made by Congress volunteers on Dharasana Salt Depot?

Inspired by the Dandi March by Mahatma Gandhi, in Tamil Nadu, C Rajagopalachari led a salt march from

At which one of the following Round Table Conferences held in London was Mahatma Gandhi present?

Mahatma Gandhi, when visited London to participate in the Second Round Table Conference, stayed at:

Mahatma Gandhi left Bombay for London to participate in the Second Round Table Conference as a Congress representative in the Ship known as:

Who among the following took Mahatma Gandhi’s gain in the Gandhi-Irwin Pact as “Consolation Prizes”?