Answer:
True
Step-by-step explanation:
It is true that in an outline, your main points represented by a Roman numeral should be flush with the left hand margin. This ensures that the structure and organization of the text makes sense and is maintained. Although this might not seem important at first, it can have a lot of important consequences for your work. A text that is unclear in this respect might confuse you while writing it, or the reader while reading it.