Identify the source of the excerpt titled, ‘Why the Salt Satyagraha’?

The correct answer is Option (3) → Collected Works of Mahatma Gandhi

‘Why the Salt Satyagraha?’ is a piece in which Mahatma Gandhi explains why he chose salt as the symbol of protest in 1930. He calls the salt tax wicked: it taxed a basic necessity of every Indian, stopped people from making salt themselves and even destroyed the natural salt that the government could not sell. He calls the salt monopoly a fourfold curse. The excerpt is taken from The Collected Works of Mahatma Gandhi (CWMG), Volume 49.