a person who wrote a book
Choices 2 and 5 are correct. The other sentences use too many commas and periods in the wrong placements. If you read it out and pause at each comma and period, the others will sound wrong to the ear. Hope this helps! :)
<span> It is presenting reasons, explanations, or steps in a process. Logical order should be used with appropriate sequencing of ideas or steps in a process. Effective </span>expository<span> writing should contain a main idea, supporting details, and a conclusion.</span>
