Solution:Sir Thomas Browne's longest work, Vulgar Errors, is about the mistaken beliefs of the poorly educated. In this work Browne challenging an refuting the vulgar or common errors and superstitions of his age. It first appeared in 1646 and went through five subsequent editions, the last revision occurring in 1672. Browne's three determinants for obtaining truth were the authority of past scholarly works, the act of reason, and empirical experience. Hence, option (a) is correct.