If you have a multi meter, you can switch it to ohms and put it across the thermostats and thermal fuses which typically look like this:
If your meter reads zero then the device is good. If your meter reads 'OL' then the device is open and will not pass current.
Disconnect any wiring from the devices before you test them.
You can buy these on line for a few dollars.
Sure. It is a big element. The break should be visible.
You can also put a meter across the terminals. You should get an ohm reading. If you get an 'OL' on your meter, the element is broken.