Answer : D
Explanation
Ezhava Memorial was signed by 13176 members of the Ezhava community.
Vaikunda Swamikal called the Travancore Rule as Rule of black Devil ( Neechan).
Vagbhatanandan started the journel Abhinava Keralam (1921) and Started a Sanskrit study center 'Tatwa Prakashika' in 1906 at Kozhikode.
Rani Lakshmi Bai abolished slavery from Travancore with the Proclamation of 1815.
Vaikom Satyagraha was a movement in Travancore (modern-day Kerala) for temple entry of the depressed classes. It took place near the Shiva Temple at Vaikom, Kottayam district, Kerala during 1924-25. Mahatma Gandhi hailed it as "the miracle of modern times".
Pandara Pattam Proclamation of 1865 is known as “the Magnacarta of the Travancore ryots(farmers)” - It conferred proprietary rights of Sirkar Pattam lands to the holders.