Answer:
1. B. having less time to develop skills.
2. A. they value leisure time more than buying products.
Step-by-step explanation:
For question 1, any job require a lot of time. Actually, most of the cases, you're payed for your time.
So, one negative trade-off is that, while your work, you don't have time to do other stuff, and more important, you don't have time to develop other skills, which is a serious problem. Because, imagine that your are hired only for your skills, but if you don't improve, after 10 years, you're gonna have the same skill set, and then, the company decides to hire another person.
On the other hand, question 2 is easier, because people will appreciate more their leisure time that buying products, because that time is scarce.