When developing a question for a scientific inquiry, the question will ideally a. identify variables. b. be measurable. c. not just simply ask why. d. all of these

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.

the displacement produced by the body.  

the amount of force subjected to the body.  

the angle between the direction of force and displacement