How can you narrow down ideas for a topic? a. write sentences and questions to get ideas b. quickly jot down as many ideas as you can to see what sparks your interest c. make an illustration or map of an area to generate ideas d. use a web diagram with a general topic to create subtopics

D. Use a web diagram with a general topic to create subtopics.

Explanation:

The narrowing down of ideas is a crucial stage followed after the brainstorming of ideas as it assists in the selection of the best possible ideas and creating some innovative ideas after combining these ideas. This stage allows the researchers to specify the ideas as too broad ideas can be unmanageable and may create conflicting opinions and also difficult to research on every idea. Thus, a web diagram of a topic carrying different subtopics would give a concise and specified form to the researcher to focus his attention on. The first, second, third option indicates the generation of ideas that comprises the Brainstorming process and not the narrowing down of ideas. So, it's D.