Answer:
b. interpersonal, informal, and positive
Explanation:
Overall, Fred and Sarah's conversation is been best described as Interpersonal, informal and positive. As we follow the exchange of conversation it is not formal at all. The use of different slang and been too kind to each other described the informal and positive communication
The answer is Foreshadowing
I believe that you are correct, because demand effects the price of everything. Not just for stocks. Whether a company is doing well with in the market will determine the over all worth of its stocks. If they are doing very well then the price will increase. If not the price will decrease.
Hope this helped! Let me know if I have to clarify or explain something more in depth!