The answer would be C: Rheostat. :)
It's inertia. A rule that you see every day, for example a brick will stay in the same spot unless a force acts on it.
The statement “Electrons are pulled closer to the oxygen
atom” correctly describes the electrons in a water molecule. The
correct answer between all the choices given is the second choice or letter B. I
am hoping that this answer has satisfied your query and it will be able to help
you in your endeavor, and if you would like, feel free to ask another question.
Answer:
c)by a factor of four
Explanation:
The total energy of a simple harmonic oscillator is given by

where
k is the spring constant of the oscillator
A is the amplitude of the motion
In this problem, the amplitude of the oscillator is doubled, so
A' = 2A
Therefore, the new total energy is

So, the total energy increases by a factor 4.