V.O. Chidambaram Pillai is remembered for his contributions to:

V.O. Chidambaram Pillai is remembered for his contributions to the Swadeshi movement and shipping industry. He was a prominent figure in the Indian independence movement, and he played a key role in the boycott of British goods and the development of Indian-owned shipping companies. He was also a successful businessman and philanthropist.

Option a) is incorrect because V.O. Chidambaram Pillai was not a major figure in social reform movements.

Option b) is correct because V.O. Chidambaram Pillai was a prominent figure in the Swadeshi movement and shipping industry.

Option c) is incorrect because V.O. Chidambaram Pillai did not participate in armed rebellion.

Option d) is incorrect because V.O. Chidambaram Pillai was not a major literary figure.