What is kinetic energy ? A) stored energy
B) moving energy
C) potential energy
D) all of the above

B; moving energy

Explanation:

"All forms of energy are either potential or kinetic energy. Potential refers to stored energy while kinetic is energy in motion"

This states that kinetic energy is indeed energy in motion while potential energy is stored energy.

Hope this helps!

the median of the data is 4.5.

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.