Basaveshwara declared that work is
A.Essential
B.Important
C.Worship
D.Most Important

Hint:We will discuss Basaveshwara.Basaveshwara was Saint. He used to preach in three forms soft advice, hard criticism and strict warning. The way of salvation according to him was surrendering oneself to Shiva with total devotion.

Complete answer:
Let us discuss teachings and his beliefs.Basaveshwara was Saint. He used to preach in three forms soft advice, hard criticism and strict warning. The way of salvation according to him was surrendering oneself to Shiva with total devotion. According to him, work is worship. Anubhava Mantapa was established by him. He made his contribution in Kannada literature, Vachanas. It represents Kannada as the language of common people.He was one of the greatest spiritual leaders. he was a Revolutionary saint and a great poet in Kannada. He was also a social reformer; he was called the prophet of the new era in Karnataka. He was born in a Brahmin family, they were doing well. He has studied Vedas, upanishads and Purana. He had struggled for his life time. His main efforts were to eradicate caste discrimination which was prevalent during those time. He was a common man raised to Divine Heights of spiritual realization.

Hence, the correct answer is option (C).

Note:A person who is acknowledged as a holy or virtual person, in Christian faith it is believed that he has been in heaven after death. He is the person who is recognised to have holiness likeness of closeness to God.The word Saint comes from Latin word sanctus which means Holy.