It is true that the formal outlines help us organize our material and double-check the content of our message. The correct option is b.
Formal outlines are a visual listing of our paper's main concepts, broken down into main topics and supporting topics and it uses Roman numerals such as I, II, III, etc., capital letters such as A, B, C, etc., Arabic numbers such as 1, 2, 3, lowercase letters such as a, b, c. Its indentation to organize these topics and subtopics in list format can be written in fragments or complete sentences.
The formal outline has a very specific structure.
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