Answer: (A) ATP Explanation: ATP (Adenosine Triphosphate) is known as the energy currency of the cell because it stores and provides energy for many biochemical processes. Cells use ATP to power various functions, such as muscle contraction, nerve impulse propagation, and chemical synthesis. When ATP is broken down into ADP (Adenosine Diphosphate), energy is released, which the cell can use for its activities.
