Explanation:

Surya Sen :

• Surya Sen had actively participated in the non-cooperation movement and was popularly known as Master. Arrested and imprisoned for two years, from 1926 to 1928, for revolutionary activities, he continued to work in the Congress.
• Surya Sen, a brilliant andinspiring organizer, was an unpretentious, softspoken, and transparently sincere person. He was fond of saying: ‘Humanism is a special virtue of a revolutionary’.
• He was a great admirer of RabindraNath Tagore and KaziNazrul Islam.
• Surya Sen was the Secretary and five of his associates were members of the Chittagong District Congress Committee. He decided to organize an armed rebellion along with his associates to show that it was possible to challenge the armed might of the mighty British Empire.
• They had planned to occupy two main armories in Chittagong to seize and supply arms to the revolutionaries, to destroy telephone and telegraph lines, and to dislocate the railway link of Chittagong with the rest of Bengal.