Answer:
Herd behavior in humans is frequently observed at times of danger and panic; for example, a fire in a building often causes herd behavior, with people often suspending their individual reasoning and fleeing together in a pack. i hope this helps :) have a good day
The answer is probably acid
Cannot is formal, while can't in informal.
"Cannot" and "can not" are interchangeable, but when you are asking question for example:
"why can't I...", you can also say "why can I not..." (which is more formal), but you can't say "why cannot I..."
The answer is D. To be able to remember the important parts of what you just read.