C. Unbalanced. You need an unbalanced force to cause an object to move, stated by Newton's 2nd law of motion
Amplitude, is the answer to the question
Your question seems incomplete, however, I might help you solve the problem even though the values are not given. The intensity of a traveling plane electromagnetic wave can be computed using the following equation:
S = (c/u0) * B^2
where s is the EM wave intesity
c is the speed of light
B is the magnetic field
u0 is the energy density
I think the correct answer from the choices listed above is option C. The ancient geographic setting of an area is known as its paleogeography. Paleogeography is the study of historical geography and is generally used in studying physical landscapes. Hope this answers the question. Have a nice day.
