Which of the following substances is measured as intake?

In the context of measuring intake, water is typically the primary substance tracked, as it is essential for hydration and overall bodily functions. Monitoring water intake helps ensure that individuals, especially those in healthcare settings, maintain proper hydration levels.

While alcohol and medications might be important to consider in overall patient care and wellness, they are usually not classified under standard intake measurements in the same way as water. Alcohol is often monitored separately due to its effects on the body and potential concerns regarding substance use. Similarly, medications are usually documented in different contexts, focusing on administration and dosage rather than as a fluid intake.

Thus, water stands out as the most critical substance measured as intake, aligning with standard practices in health monitoring and patient care.