What is the primary purpose of using charts and diagrams instead of other tools to brainstorm for a research paper topic?

a .to ensure that the ideas follow a logical order
b .to organize ideas based on relevance
c .to visualize relationships among ideas
d .to allow ideas to flow freely
e .to explore a topic from different angles

C .to visualize relationships among ideas

Explanation:

A visual aid will help you to understand better how related are the objects of the research. You don't need a diagram to make something follow a logical order, nor to organize things based on relevance. It is also not needed to put the subject under a new light. The diagram and charts actually help you with comparisons more than anything.

can you give us the options

part a.   = c.)

part b. = a.)

explanation: