The correct option is B Louis Pasteur
Scientist′s NameYearExperimentObservationFrancesco Redi1668He placed meat in two jarsObseved that maggotsand left one open and the other covered.developed in the uncovered jar.Lazzaro1764Boiled animal and vegetable Broths Found no signs of livingSpallanzani1764and sealed them immediately.things in the broth.Louis Pasteur1864Boiled animal and vegetable broths,Observed microorganisms in straight necked flaskin a straight flask and a swan necked flask (tobut not in the other one. This firmly establishedrestrict air movement) and kept both open. that air is the source of these organisms.
The given table summarises the experiments conducted by renowned scientists who disproved the theory of spontaneous generation. Conceptually, the experiments conducted by these three scientists came to lay the foundations for the theory of biogenesis (life from life) wherein they explain that life originates from pre-existing life, which completely disproves the theory of spontaneous generation (life from inanimate objects).