What is the standard unit of mass in the metric system?

The standard unit of mass in the metric system is the kilogram. It serves as the base unit from which other units, such as grams, are derived. In fact, a gram is defined as one-thousandth of a kilogram, which solidifies the kilogram's role as the primary unit. In scientific measurements and applications, using the kilogram ensures consistency and alignment with internationally accepted standards.

While the gram is commonly used for measuring smaller masses, especially in laboratory settings, the kilogram is recognized as the fundamental unit in the metric system, making it essential for understanding and converting mass in various scientific contexts. The other options, such as pound and ounce, are units used in the imperial system and do not apply to the metric framework.