arguments in philosophy. chemical analysis of material. examining models of the process. conducting a controlled experiment.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: The theory of spontaneous generation was eventually disproved scientifically by
Possibilities:
- arguments in philosophy.
- chemical analysis of material.
- examining models of the process.
- conducting a controlled experiment.

conducting a controlled experiment.