Asking why and how about various things in life is a way to develop which life skill?

Learning skills

Explanation:

Remember, life skills refer to essential mental and physical abilities needed by a person to successfully face challenges of everyday life.

Therefore, an individual who inquires why and how about the various things in life is developing his learning skill, thereby also increasing his critical thinking abilities.

explanation:

the masses of the objects and the distance between them

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.