The correct option is
D a-(iv); b-(iii); c-(i); d-(ii)
a) Mutation theory is proposed by Hugo de Vries.
b) The famous swan-necked flask experiment is performed by Louis Pasteur in this experiment he used a flask whose neck exactly looked like the neck of swan.
c) Origin of species is the great scientific theory of Charles Darwin in which he explained that the species are originated from natural selection, the most fit species can survive in nature.
d) Micrographia is a significant book of Robert Hooke which is related to the morphological description of microscopic organisms.