All waves consist of some sort of that transmits energy.
medium
force
disturbance
particles

Option (c) is the correct answer.

Explanation:

A wave is defined as the disturbance that propagates through a medium and which helps in transfer of energy from one point to another point.

A wave does not transport matter from one place to another but it only transports energy from one place to another.

Thus, we can conclude that all waves consist of some sort of disturbance that transmits energy.

im not to sure what it is

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.