Answer:
c. His fond recollections emphasize his genuine sincerity.
Explanation:
One of the major ideas that could be coined to the French mathematician Rene Descartes was that "<span>Knowledge is derived from sensory experience." Furthermore, one of the most significant contributions of Descartes to the world of science was that he established the relationship between geometry and algebra.</span>
Part A: D.
Meaning of allusion:allusion refers to something that is in both reality and fiction. for example, a book mentions Mona Lisa. it is an allusion because it's referring to something that is in reality in a book.
Part B: A