Explanation:

- Pandemonium refers to a state of extreme confusion or disorder, often associated with noisy chaos.

- Pander means catering to someone or indulging their desires, sometimes in a degrading or moral compromising way.

- Chaos: This is the correct option. It means complete disorder and confusion, similar to pandemonium. .

- Gratify implies giving pleasure or satisfaction.

- Panic involves sudden overwhelming fear, often resulting in erratic behavior, but it is not synonymous with the level of chaos like pandemonium.

Your choice of "Chaos" aligns perfectly with the meaning of "Pandemonium."