I think people "follow the crowd" because of peer pressure. People don't like being singled out or treated differently than the rest. So they try to fit in, or change their personality or self to be like their peers.
Hope this helps!
Monitor is a concrete noun.
A concrete noun is something material. Basically, just remember that if you can touch it, it's concrete!
Abstract nouns are usually feelings, such as anger, happiness, sadness. If you can't touch it, it's abstract!
If you have any questions about how to differentiate concrete and abstract nouns, just ask!
Good luck :))
The second and last sentences describe Jessicas acdemic bahiovors!
your best choice is A go with that and I hope you have a good day