A derived unit is a unit that is obtained by combining base units. Base units are the fundamental units of measurement that are defined by standards and are used to measure physical quantities such as length, mass, time, electric current, temperature, and amount of substance.
Out of the options given, Ohm is the only derived unit. It is derived from the base units of length, mass, and time, and is used to measure electrical resistance.
Ampere is the base unit of electric current, kilogramme is the base unit of mass, second is the base unit of time, and Kelvin is the base unit of temperature.