Which of the unit topics do you feel will be the most helpful as a business person? Explain.

you need to answer for each chapter. (Ch8-ch10).The answer to each chapter must be at least 150 words.
1. What (if any) topics did you struggle with? Describe how/why?
2. Which of the unit topics do you feel will be the most helpful as a business person? Explain.
I have added 2 examples for answers.