What key sets of experiments led to the understanding that, in fact, DNA and not protein was the hereditary material and what evidence did each experiment provide

you did not attach the discourse, but i assume it to be the discourse on the origin and basis of inequality among men (the original titile in french is: "discours sur l'origine et les fondements de l'inégalité parmi les hommes"), also know as "second discourse". in this discourse, jean-jacques rousseau emphasizes that private property is the basis of all inequalities.

therefore, what enabled the old regime to maintain as long as it did was private property.

the correct answer is:

a population changes in response to a change in the environment.

i wish i could with all of them i can barley see the first one so here's the answer to the first one b