Take a look at the item again:
My appliances are always hungry. (A)
For example, the dryer will eat underwear,
(B) and the microwave
will suck off half a frozen dinner
(C) while it is cooking.
You wanted to do this:
My appliances are always hungry, for example,
the dryer will eat underwear, and the microwave will suck off half a frozen
dinner while it is cooking.
Putting a comma after hungry will cause a comma splice, an error that occurs when you have run too much information together. Reconsider your options.
You might want to review the rules.
Go back to the sentence to try again.