The immediate energy production in cells can be achieved by consuming glucose. Glucose is a simple sugar that serves as the primary source of energy for our cells. When we consume carbohydrates in our diet, they are broken down into glucose, which can then be used by our cells to produce energy through a process called cellular respiration. Glucose is readily available in our bloodstream and can be quickly taken up by cells to fuel their metabolic activities. On the other hand, proteins and sucrose need to be broken down into their constituent molecules before they can be used for energy production. Vitamin C, although important for various cellular functions, is not directly involved in energy production. Therefore, the correct option for immediate energy production in cells is glucose.