The correct answer to this question is True. mL stands for, and it is a minimal amount of liquid. To put it in perspective, one mL is equal to about 20 drops of water. The word military itself means one-thousandth of a liter because one thousandth is milli. L stands for liters. Many jugs of water are a liter.
Both of these are measurements of liquid. 1 mL makes 0.001 L. Knowing this 50000mL equals 50L, which makes this question correct. Liquid containers found in stores often uses these measurements so patrons can know how much they are buying.