A machine can do all the things that is stated above.
Answer: Option D
<u>Explanation:</u>
A machine is a device used to reduce the efforts put by human and to make our life easier so that we can spend our time and energy on some other useful things productively.
Machine reduces the force put by humans and alternatively plans and manages to equilaise the force required. It is also capable of changing the direction or the distance required by the force in a machine.
<span>Unexpected orbital velocities of stars around the centers of galaxies led astronomers to predict the existence of dark matter. Dark matters are hypothetical substance that are believed to account for around five-sixths of the matter in the universe.</span>
