What are physical characteristics that help an organism survive

Special characteristics adapted by specific animals allow them to carry out unique abilities in order to survive. For instance, a cheetah's long tail helps it balance when running at rapid speed in order to hunt. Or an arctic woolly bear caterpillar is able to be frozen and fill it's body with an antifreeze hormone that allows it to survive temperatures below freezing.

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. 

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