2. Inertia refers to the A tendency of an object to accelerate as it moves downhill
B. change from potential energy to kinetic energy-
C. resistance of an object to gravitational force.
D. tendency of an object to maintain its state of motion unless acted upon by a force.

explanation:

newton's third law, for every action there is an equal and opposite reaction.

there are no correct statementd on the list of choices you provided.

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.