The rule is that when the conjunction and is used to connect two independent clauses to create one compound sentence, there should always be a comma before and. Having this in mind, the correct answer is the first choice - The library of congress houses over 147 million items, and it is the largest library in the world.
To show the level at which the action was unreasonable and illogical
I would go up to them and ask what they’re laughing abt. After that I would say how would you feel if you were the person being laughed at.