This is short for adenosine diphosphate. an organic compound that is composed of adenosine and two phosphate groups. with the addition of another phosphate group, it is converted to atp for the storage of energy during cell metabolism. it then forms again, from atp, when a phosphate group is removed to release energy

The correct answer will be- ADP

Explanation:

Adenosine diphosphate or ADP is an organic compound which is formed by the breakdown of the phosphate bond of the ATP.

This breakdown of ATP releases ADP composed of an adenosine sugar and two phosphate groups. This ADP can be converted back to the ATP molecule by the addition of the Phosphate group which can be stored as the energy molecule is the cell.

Thus, ADP is the correct answer.