Correct answer: A. Vasudeva Kanva
Explanation: The direct answer is A: Vasudeva Kanva. The Kanva dynasty came after the Shunga dynasty in the usual account of ancient Indian history. Vasudeva Kanva overthrew the last Shunga ruler, Devabhuti, and established Kanva rule, so he is remembered as the founder. Option A is correct because Vasudeva gave the dynasty its name and began its political line. Option B, Devabhuti, is wrong because he was generally described as the last Shunga ruler, not the founder of the Kanvas. Option C, Agnimitra, is associated with the Shunga dynasty and was a Shunga ruler, so he does not fit the question. Option D, Kharavela, was a ruler of Kalinga, known from the Hathigumpha inscription, and was not the founder of the Kanva dynasty. A weak student should separate dynasty names from individual rulers: Shunga came first, then Kanva; Vasudeva began Kanva rule. The question asks for the founder, not the last ruler or a ruler from another dynasty. Memory cue: “Vasudeva starts the Kanvas”; also remember the sequence Shunga followed by Kanva.