Why would you use a topic web?
a. to expand the subject of your research paper
b. to narrow the subject of your research paper
c. to find sources for your research paper
d. to organize your research paper

A topic web is commonly used to expand the subject of your research paper. It is a tool to help researcher for a flexible framework of developing ideas, information and its relationships between concepts. Moreover, it is a brainstorming strategy where the subject will be link to the supportive ideas or details that would improve fluency of topic.