Which of the following represents "mg" in terms of weight measurement?

The abbreviation "mg" stands for milligram, which is a measurement of weight in the metric system. Specifically, one milligram is one-thousandth of a gram (1 mg = 0.001 g). This unit is commonly used in pharmaceuticals to measure small quantities of drugs and supplements accurately. Understanding that a milligram is a measurement of weight is essential for correctly dosing medications and ensuring patient safety, as medications often require precise dosages.

Other options include milliliter, which measures volume rather than weight, microgram, which is a smaller weight measurement equivalent to one-millionth of a gram (1 µg = 0.001 mg), and megagram, a much larger measurement equivalent to 1,000 grams (1 Mg = 1,000,000 mg). These distinctions are crucial in the context of pharmacy and medication dispensing, reinforcing the importance of using the correct unit of measurement in different scenarios.