Final answer:
The student should report the correct measurement as approximately 19.9 mL by checking the bottom of the meniscus in the graduated cylinder.
Step-by-step explanation:
The student should report the correct measurement as approximately 19.9 mL. To determine the correct measurement, the student needs to check the bottom of the meniscus in the graduated cylinder. By referencing the ten smaller lines, the amount of water lies between 19.8 mL and 20 mL. Since the level is less than 20 mL, but greater than 19.8 mL, a reasonable estimate is 19.9 mL. It is important to note that the graduation marks on the graduated cylinder may contain inaccuracies, which can result in slightly different readings from the actual volume of liquid present.