Putting something in "chronological" order means putting it in the order in which it happened typically First.... Second... Third....Fourth.
Example: I went to school today. I brushed my teeth, opened my eyes, and put on clothes.
In CHRONOLOGICAL order, I (first) opened my eyes, (secondly) brushed my teeth (then) put on clothes.
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Answer:
Because it makes clutter in the hallways. It gives people the chance to skip their next class. fights breakout in the hallways.
B is the answer because progressive means present tense.
This answer is most definitely true. True true true true