It's know as chemical equilibrium
When one phosphate group is removed by breaking a phosphoanhydride bond in a process called hydrolysis, energy is released, and ATP is converted to adenosine diphosphate (ADP). ... Likewise, energy is also released when a phosphate is removed from ADP to form adenosine monophosphate (AMP).
What they mean by formatting text is ,to organise text in such a way that it becomes more attractive and easy to read
The answer u r looking for is- D, Nuclear Envelope. Hope I’ve helped ;)