I believe the one that is typically included in the introductory section of an expository essay is : a. evidence and facts. Evidence and facts will grab the attention of your reader and will build up to arouse their interest upon your thesis statement. hope this helps.
hope it helps
Ans
wer:
The earliest form of trade was BARTERING
2. Negotiating in trade means you are coming to an agreement on an item's value
Kate is a girl and schneider is a boy
D. Run-on Sentence
The other options wouldn't make any sense except maybe "A", but a fragment is not completed whereas a Run-on would be completed, just lacking punctuation.