Please help my grade went from a 100% to a 44% after getting a 1/5 on this

i believe the correct answer from the choices listed above is the first option. the scientists need to look at the   validity of data, claims, hypotheses, and observations before  developing an argument. they base their arguments on facts that are present and they make sure they have proofs. 

explanation:

it takes hundreds of years to become stable.

if you have another question lmk.

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