Which statement best describes why the universe could be considered an isolated system?
All matter that enters the universe remains contained within the universe.
The universe is a contained system where no energy exits.
Energy and matter are created in the universe, when new energy is created, old
energy exits.
In the universe, all energy and matter are contained; no energy or matter enters
or exits,

answer; (d) spontaneous processes are characterized by the overall conversion of order to disorder;

answer and explanation;

note: the given question is incomplete.

complete question is given below.

which is an example of kinetic energy?

a. the energy stored in ethanol  

b. a hockey puck sliding across the ice  

c. a compressed spring  

d. a ball sitting at the top of a ramp

solution: the kinetic energy is the energy posses by the virtue of the motion of the object.

in the given options, a, c and d are the example of potential energy because it is the energy posses by the virtue of the rest of the object. but option b has the kinetic energy as the object is in motion.

hence, a hockey puck sliding across the ice   is the apex example of kinetic energy.

so, the option (b) a hockey puck sliding across the ice   is the correct option.