Final answer:
ADP + P + Energy → ATP. When energy is needed, ATP is formed from ADP and a phosphate group, releasing energy from the breaking of the phosphodiester bonds.
Step-by-step explanation:
The correct equation to show how ATP is synthesized from ADP is c) ADP + P + Energy → ATP. When energy is needed, ATP is formed from ADP and a phosphate group, releasing energy from the breaking of the phosphodiester bonds. This process occurs in cells and is essential for storing and releasing energy.