Option 1 states that the Chittagong group had a large number of youth members, including Ganesh Ghosh, Lokenath Baul, and Anant Singh. This statement is correct. The Chittagong group was indeed composed of many young individuals who were passionate about the Indian independence movement.

Option 2 states that the leader of the Chittagong group, Surya Sen, had been a lawyer in Dhaka before joining the group. This statement is NOT correct. Surya Sen was never a lawyer before joining the group. He was a school teacher who later became involved in the revolutionary activities against British rule.

Option 3 states that Surya Sen and his group were closely associated with Congress work in Chittagong. This statement is correct. The Chittagong group maintained close ties with the Indian National Congress and collaborated on various activities to resist British rule.

Option 4 states that the Chittagong group had prepared an action plan to occupy the armories in Chittagong. This statement is correct. The group formulated a detailed plan to seize control of the armories in Chittagong and sparked an armed rebellion against the British authorities.

In conclusion, the statement in Option 2 is NOT correct