The correct answer is B. Kg
Explanation:
A base unit or basic unit refers to a unit used internationally to measure certain variables or physical properties such as temperature, distance, mass, time, etc. These units are useful for studying phenomena as well as guaranteeing units around the world follow a standard. In the case of mass which refers to the matter in an object or body, the basic unit used all around the world is the Kilogram represented as Kg which is believed to be equivalent to the mass in a litter of water and to 1000 grames (g). Thus, the basic unit of mass is the Kg.
