It's very important to re-read your emails before sending them out for a couple of reasons:
1. You need to make sure you're sending it to the correct person(s).
2. Proof reading will make sure that you spot any grammatical errors or spelling errors to make sure you don't look foolish; especially if it's an important topic.
The answer is C) Sarcastic. Sarcastic means marked by or given to using irony in order to mock or convey contempt. The author is sarcastically saying that Editha's father is speaking in his "public-will-now-address-a-few remarks tone". She is attempting to use irony in this line so the answer is sarcastic.
"Hard work would always yield results, as proved by our predecessors. A few notable figures to mention would be Thomas Edison and the Wright brothers, Wilbur and Orville. Studying also conforms to this concept."
You can use this as an opening.
Conflict; conflict is defined as opposition that motivate the development of a plot :)