WILL PAY 15 DOLLARS TO WHOEVER FINISHES THIS FOR ME:
It is a file extension

A) the enthralling of formation for pure element in its standard state is always positivehope this : )

Answer is (d)a brainliest would be appreciated

Atp, shorthand for adenosine triphosphate, is the standard molecule for cellular enger in the human body. all motion and metabolic  processes  within the body begins with energy that is released from  atp, as its phosphate bonds are broken in cells through a  process  called hydrolysis.

Pretty sure it's d. heterogeneous is separated by physical properties.