When developing your complete-sentence outline, each main point or subpoint should

b. only one idea.

Explanation: When developing your complete-sentence outline, each main point or subpoint should contain only one idea. A sentence outline is important because it help you get a overall picture of what your paper will look like. When you pick one idea in a sentence- outline it helps in organizing paragraph

in other that makes sense. It also help the writer from getting stuck,when writing the actual writing or essay. This will help you provide a clear message to your audience. As you apply this one idea in your complete- sentence outline,apply the principal of relevant,clarity and balance.