What two things make up the 96% of the universe

I know that dark matter, things astronomers are unable to see even with the highest of current technology, makes up most of the universe.

Most of the universe is made up of stars and galaxies, but if you wanna go even further into that, it's filled with gas and dust.

the answer is b ) square root of 5

answer would be letter choice (a),   a ball resting on a shelf. would be another example of potential energy   >   stored energy > not moving.

a ball spinning on a finger   >   kinetic energy > moving energy

a ball rolling on the ground   >   kinetic energy   > moving energy

a   ball flying through the air   > kinetic energy   >   moving energy

hope that                                         : )