Hi! Unsure of what you're asking. Can you please reword?
There are many many books that make it up
they can be too heavy to carry around
its time consuming trying to find one this in a large set of books
The answer i believe is "what"
Answer:
Career advancement and hobbies. Studying online gives you more flexibility.
Flexible schedule and environment
Lower costs and debts
Self-discipline and responsibility
More choice of course topics
Hope I helped!
I'm pretty sure the answer is A. Bird