Final answer:
The correct word to fill in the blank is 'pandemonium,' as it best captures the tumultuous scene in the library caused by a prank with mice.
Step-by-step explanation:
The correct word to fill in the blank is 'pandemonium,' as it best captures the tumultuous scene in the library caused by a prank with mice.The library became a scene of pandemonium when a practical joker released a number of mice. The word 'pandemonium' refers to wild and noisy disorder or confusion; uproar, which exactly captures the scenario of a library suddenly thrown into disarray by the unexpected release of mice.
Other options like 'chaos', 'confusion', and 'disorder' are close in meaning, but 'pandemonium' usually suggests a level of tumult and riotous uproar which would be expected with such a surprising event. The excerpts provided show various scenarios of disorder and confusion, but they all point towards a sudden and disruptive kind of chaos that matches the word 'pandemonium'.