Which of the following choices corresponds to the basic unit of volume in the SI system?

The basic unit of volume in the International System of Units (SI) is the cubic metre. This unit is defined as the volume of a cube with edges that are one metre long. It is a fundamental measurement used in science and engineering to quantify three-dimensional space.

Other units, such as the litre, are derived from the cubic metre but are not the base unit. The litre is defined as one cubic decimetre and, while commonly used, is not considered the basic unit in the context of SI. Gallons and quarts are units of volume that are primarily utilized in the United States customary system and are not part of the international standard for units. Understanding these distinctions is key for proper measurement and conversion in professional settings.