Answer:
the answer is The scientific method proved the validity of reason over religious dogmatism and superstitions that usually prevailed"
The Enlightenment philosophers, such as Locke, Montesquieu or Rosseau. introduced ideas that challenged, and ended up derrocating, the power structures of the Old Regime. They promoted reason and scientifically-proved premises and hypothesis over religious dogmas and superstitions, based solely on obscure and unproved ideas imposed by privileged social groups to control those that they considered inferior.
The scientific method (observation, collecting data, testing, etc) was used to provide evidence to prove the validity of the ideas developed by this new generation of philosophers.
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