Answer: B. These sources should be used to get an overview or general idea about your topic.
Step-by-step explanation:
Primary sources refers to the sources of information which was created as at the time under study. It's an original source of information about the topic. Examples of primary sources autobiography, artifact, diary, document, manuscript etc.
Examples of this type of source would be a contemporary diary or a report by the scientist conducting the research. These sources tend to be more credible.
Therefore, the correct option is B.