Why might scientists want to compare the new stuff they create to the old stuff they started with?

(Learning from mistakes)

Explanation:

The reason they would compare the new/old resultsis that they can check to see if they were correct. In a way, everybody does this, it's history.

the answer is c, all the other options are things they are known for.

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the answer that best explains what happened to george washington at fort necessity, pennsylvania is : washington was attacked by the french but was able to negotiate with them to peacefully end fighting. the battle took place on july 3, 1754. the battle is considered as being the start of the french and indian war.