Scientific knowledge change over time because we discover news things or properties that impacts how things actually work in the science world. What impact these have on society is that it helps us be more aware of the things in our world, apply these newly dicover knowledge into our own lives to make it better, and it is the beginning step to knowing and discovering more about the world that we live in.
Its B because it was mostly about death
The statement that best exemplifies a strong persuasive claim is the last one - School communications should be sent electronically to conserve paper.
In this sentence, you have your claim that you want to prove, as well as the reason why your claim is correct. The other options are just facts, they are not sentences you would use in order to persuade someone to believe or do something.
