(look at the minerals in the linked picture)
both diamond and coal are formed by changes in pressure and temperature below the earth's surface. which of these is a step in the formation of the minerals?

a) atoms break up in extreme heat
b) atoms are rearranged in materials
c) atoms combine in water to form solids
d) atoms of magma cool after a volcanic eruption

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.