question_answer

Pasteur succeeded in disproving the spontaneous generation theory because                                             [DPMT 1992]

A)            He was lucky                           

B)            He was ingenious in drawing out the neck of the glass flasks so as to provide access to air but not to the micro-organism

C)            Of the fact that the sample of yeast taken by him was dead

D)            Of the clean surroundings of his laboratory