I'm pretty sure number 48 is C. Hope this helped :)
Of the three sources listed, geothermal energy
is the least dependent on the weather.
(Once it's installed and running, that is.)
No water is lost because matter cannot be created nor destroyed
It is an open series circuit and this is why:
its obvious its a series circuit because all the symbols are in a straight rectangle.
its an open circuit because an open circuit has something that doesn't allow the electrons to flow all the way. and the thing blocking the electrons it the switch which is open, (off).
Hope this helped!! sorry its late!!