Acar engine burns fuel and has moving parts. sometimes, an engine can become too hot and overheat. what can prevent the engine from overheating?

there many things you could do, one is try getting a cooling system, another thing is its extramly hot and you may need to tunr off your car to prevent the engine from over heating.

If I'm not mistaken the only prevention I know of is coolant and the only thing I can think of is that the car ran out of coolant.  If your car is overheating it can either be because the coolant is not moving fast enough, the heat isn't getting transferred out of the engine to the coolant, or it is not getting transferred out of the coolant to the air through the radiator

adding a(n) to an electric circuit would increase the magnetic field around a wire;

b. solenoid

a solenoid is a type of electromagnet whose purpose is to generate a controlled magnetic field.

if the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.

b. lifting dumbbell weight at 20-degree angle from the body after a 45-degree angle