What is the volume of one liter in milliliters?

One liter is defined as a volume that is equivalent to 1000 milliliters. This is a standard measurement in the metric system, where the prefix "milli" indicates one-thousandth of a base unit. In this case, a milliliter is one-thousandth of a liter, making it clear that there are 1000 milliliters in one liter. Understanding this relationship is vital for conversions in various scientific, culinary, and everyday applications where precise measurements are necessary. The other options reflect different volumes but do not accurately represent the conversion from liters to milliliters.