How many milliliters are in 20 drops of liquid medication?

To determine the number of milliliters in 20 drops of liquid medication, it's essential to know the conversion between drops and milliliters. Typically, in pharmacy practice, 1 milliliter is approximately equivalent to 20 drops of liquid for many common liquids, such as water or oral medications. Therefore, if 20 drops equal 1 milliliter, it follows that 20 drops would simply be 1 mL.

This understanding is crucial in medication dosing and compounding where precision in measurements is necessary. Using the typical conversion rate aligns with the standard practices accepted in pharmacy, making the identification of the correct answer straightforward.