What is the most logical next event?

How to germinate seeds guaranteed without soil or medium for garden or hydroponics
Select a seed, any seed.
The only consideration here will be temperature. Many seeds, especially smaller ones, will need higher temperatures.

Select from:
a). Sweet potatoes should only germinate in low temperatures. A soil temperature of 59 to 70 f (19 to 21 c) will have a clear effect on your germination cycle, and may help the soil settle more quickly.;
b). Even a small one may only work well at room temperature. Try tubers that are braised in a canning machine.;
c). So if you can't provide the heat necessary for that seed, you might not be successful in the germination. Get a cloth/towel wet and place the seeds on it.;
d). In temperatures between 33.5 to 34.4 degrees fahrenheit (11 to 15 degrees celsius), germination will take up to two months. In the winter, temperatures range from 75 degrees to 35 degrees fahrenheit (13 to 16 degrees celsius).;
c).