Which of the following is NOT one of the seven SI base quantities?

The seven SI base quantities are foundational measurements that serve as the building blocks for all other measurements in the International System of Units (SI). These quantities include length, mass, time, electric current, temperature, amount of substance, and luminous intensity.

Volume, however, is not classified as a base quantity. It is a derived quantity, calculated from base quantities—specifically, volume can be derived from length by cubing the unit of length (for example, cubic meters). By understanding the framework of these base quantities, it becomes clear that while volume is an essential measurement in various scientific and engineering contexts, it does not belong to the foundational list of base quantities defined by the SI system. This distinction is crucial for navigating units of measurement effectively in engineering and scientific disciplines.