Intake is measured in which unit?

The correct choice is milliliters (mL), which is the standard unit of measurement for intake in healthcare settings. Milliliters are used extensively because they allow for precise recording of fluid intake, which is crucial for monitoring a patient's hydration status and ensuring they receive adequate fluid. One milliliter is equal to one cubic centimeter (cc), so while cubic centimeters could also technically be used, milliliters are the more commonly accepted term in clinical practice.

The use of larger units like liters or gallons would not provide the necessary detail required in medical settings. For example, measuring fluid intake in liters might lead to less accuracy when it comes to small amounts of fluid consumed. Therefore, milliliters are preferred for their precision and utility in patient care documentation.