The properties of a substance can be observed only when it undergoes a change to become an entirely different
kind of substance with different properties,

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.

it's a b and

you can cut your hand off if your not

gravitational energy

electrical energy

kinetic energy

ligh energy