The correct answer is d) Do background research. Before making a proposed explanation during the scientific method of investigation, it is important to gather background information relevant to the question being investigated. This background research helps scientists to understand what is already known about the topic and identify any existing hypotheses or theories. It also helps to inform the development of a hypothesis, which is a tentative explanation or prediction that can be tested through further experimentation. Once the background research has been conducted, scientists can move on to constructing a hypothesis, which is the next step in the scientific method.
