Answer:
A
Step-by-step explanation:
Begin with an Arabic numeral for main topic is a formatting convention when writing an outline for an essay. In a topic outline, the main topics are typically represented by Arabic numerals, and subtopics are represented by lowercase letters. For example:
I. Introduction
A. Background information
B. Thesis statement
II. Main body
A. First main point
1. Supporting detail
2. Supporting detail
B. Second main point
1. Supporting detail
2. Supporting detail
III. Conclusion
A. Summary of main points
B) Restate thesis
C) Final thoughts
It is not a formatting convention to begin all lines with a lower case letter, to line up every letter or numeral under the one above, or to put a period at the end of every line in a topic outline.