Forming a hypothesis is accomplished deductive reasoning abductive reasoning inductive reasoning subjective reasoning

The correct answer is inductive reasoning.  

A method of reasoning in which the premises are observed as providing some kind of proof for the certainty of the conclusion. While there is certainty in the conclusion of a deductive argument, and there may be a likelihood in the truth of the supposition of an inductive argument, on the basis of the given proof.  

In inductive reasoning, a conclusion is drawn from various observations regarding a probable common reason and generating a general rule.  

a polymer is a chainlike molecule made up of small molecular units. these small molecular units are called monomers. monomers of polymer can be joined together either naturally or synthetically.  

thermophiles, notice the prefix thermo.