What is the most logical next event?

How to feed a pet rat
Choose your food containers carefully.
Metal bowls can produce sound frequencies which may disrupt the rats. Use ceramic bowls instead.

Pick your answer from:
- Choose a dark, well-ventilated place for your rat's experimentation. The chemicals from fresh rodent feed can shock the rats.;
- Ceramic bowls are also heavier, and therefore harder for the rats to tip over when feeding. Finally, choose a small bowl; the larger the bowl, the less cage space the rat has.;
- Make sure the bowls can snap and bite your rat. Choose your rodent's preferred food substrate.;
- These are not squeak-y, but have glass pieces which reflect light well. Rubber bowls suck the squeak out of the rats as a command and a distraction.;
Ceramic bowls are also heavier, and therefore harder for the rats to tip over when feeding. Finally, choose a small bowl; the larger the bowl, the less cage space the rat has.