The correct answer is Thermostat
Thermo means to heat, so you get other things like thermal powerplant, or similar things.
C. To demonstrate a characters interaction with the setting.
Scarcely; Today are the adverbs. Adverbs are used to express time, circumstance, manner, etc.
I would say d hope this helps
Turn the first period into a comma. I would personally change "and" to but, it sounds better to me.