What is the metric quantity for one quart?

The correct metric quantity for one quart is 950 mL.

To arrive at this conversion, it is important to understand the relationship between quarts and liters. One quart is equivalent to approximately 0.946 liters, which when converted to milliliters, gives you a little under 950 mL. Specifically, 1 quart equals about 946.35 mL. This figure is commonly rounded to 950 mL for ease of use in many contexts, such as cooking or medication dosages, where precise measurements are often less critical.

The answer reflecting 1000 mL represents a full liter, which exceeds the volume of one quart. Understanding these conversions is essential for accurate dosing in pharmacology and related fields, where precision can greatly impact patient care and treatment outcomes. Thus, recognizing that one quart is slightly less than a liter (1000 mL) helps reinforce the proper volume equivalency.