Which of the following is true about a good research topic?
a. it has more than one main idea.
b. it is taken from one solid primary source.
c. it offers only one correct interpretation.
d. it allows coverage of a broad area in a condensed way.

B. It is taken from one solid primary source.

The method of researching is a systematic process of gathering, integrating, interpreting and presenting a collected data ruled out by the reliability and validity of the sources and elicited evidences.
A good topic should have come from a credible and solid primary source so that the study could be backed up from the former claims. 

Go to school and learn fool