Sarah is creating a project on smartphone use. She wants to apply studies on the effects of computer use to hypothesize about the effects of smartphone use. What method will she be using?

Answer: deductive

Explanation:

Deductive method is one of the methods of reasoning, in which the consequences are deducted using general principles. The theorems are deducted from the definitions and postulates. In this previously know facts are also taken into consideration while deriving a conclusion.

According to the given situation, applying the studies on the effects of computer use to hypothesize for the effects of smartphone use involves the use of deductive method of reasoning. As here, previous knowledge is used to deduce a conclusion that is to understand the use of smartphone.