What does the metric system represent?

The metric system represents a system of weights and measures that is based on the meter, kilogram, and liter as its core units. This system is widely used across the globe in scientific, medical, and everyday contexts because of its ease of conversion—units are scaled by powers of ten. This uniformity facilitates clear communication of measurements, such as medication dosages, body dimensions, and laboratory results, which are critical in healthcare settings. Understanding and using the metric system allows healthcare professionals to provide accurate and effective care. The other options don't align with the fundamental definition of the metric system, which strictly pertains to measurement rather than scheduling, patient evaluation, or insurance.