Question

how were redis and pasteurs experiments similar?
both studied the growth of microbes in broth
both studied flies emerging from meat.
both tested the idea of spontaneous generation.
both tested whether pasteurization kills microorganisms.

Explanation:

Redi's experiment challenged spontaneous generation by showing flies didn't arise spontaneously from meat. Pasteur's swan - neck flask experiment also disproved spontaneous generation, showing that microbes didn't spontaneously generate in broth. Their main similarity is testing the idea of spontaneous generation.

Answer:

C. Both tested the idea of spontaneous generation.