At Vedaranyam, the salt law was broken by:
(A) T.S. Rajan
(B) Bakthavachalam
(C) Rajagopalachari
(D) V.O.C

Hint: The Vedaranyam March is also known as the Vedaranyam Satyagraha. It was inspired from the Dandi March led by Mahatma Gandhi. This was started by an Indian statesman.

Complete step-by-step answer:
The man who broke the salt law at Vedaranyam was a close associate of Mahatma Gandhi. The Vedaranyam March had 150 volunteers from which most of them belonged to the Indian National Congress. This march began at a place called Tiruchirappalli (in those days it was known as Trichinopoly) on 13th of April, 1930. Before reaching Vedaranyam, this march proceeded for about 241 km towards the east. Vedaranyam was a small coastal town in the Tanjore district (Madras Presidency). The salt law was broken by collecting the salt directly from the sea. The salt law here was broken by C. Rajagopalachari. All the other marchers also broke the law. The participants of this march were arrested by the police on 28 April 1930 and the campaign came to an end. Rajagopalachari, the leader of this march, was imprisoned for a period of six months. This march also gained worldwide attention to the Indian Independence movement along with the Dandi and Dharasana march. This all happened due to the salt tax imposed by the British Raj in colonial India.

Thus, option (C) is correct.

Note: Rajagopalachari is an Indian politician and belonged to the Indian National Congress. He also created awareness among the people as a part of this march and highlighted the importance of khadi or cotton and also some social issues like caste discrimination.