Which unit is abbreviated as "C."?

The correct answer refers to the abbreviation "C," which represents "Cup," a common unit of measurement used in cooking and food preparation. In various recipes, ingredients such as water, flour, or sugar are measured in cups to ensure accuracy and consistency. The cup is a widely recognized standard in American cooking, generally defined as 8 fluid ounces. This unit helps cooks and bakers accurately gauge the quantity of ingredients needed for a dish.

Other abbreviations listed serve different purposes. "Current" typically pertains to electrical measurements and does not relate to food measurements. "Centimeter" is a metric unit of length, while "Calorie" represents a unit of energy, often used to measure the energy content in food but is not represented as "C." Hence, "Cup" is the appropriate answer in the context of culinary measurements.