The correct option is A
Adenosine Triphosphate (ATP)
Explanation:
Adenosine triphosphate (ATP) is an organic compound that provides energy to drive many processes in living cells. Found in all forms of life, ATP is sometimes referred to as the intracellular energy transfer 'molecular unit of currency.' It transforms either to adenosine diphosphate (ADP) or to adenosine monophosphate (AMP), when ingested in metabolic processes. Many mechanisms replace ATP, so that every day the human body recycles its own equal body weight in ATP. It is also a precursor to DNA and RNA, and is used as a coenzyme.