Answer:
Proper grooming and professional appearance are important to gain not just a positive impression but also respect in the workplace. First impressions matter and the way employees look and carry themselves create impact with customers, and potential clients.
I believe the answer will be the medieval period
The major scale has a bright, cheery tonality.
If you are asking/wondering if this affected their business(ess) then I would have to say yes. I said yes because it says "Many US restaurant companies struggled to avoid heavy losses." (key word(s) is/are Avoid and Struggled to) which means some of them, including McDonalds probably did avoid this and some other McDonald's didn't avoid this.
(hope I answered this for you and if so I hope I did a good job)