All of the following are base units of the si system except:
kilogram
kelvin
meter
pound
liter

pound

liter

Explanation:

The SI system is the system of measurement that is the most widely used around the world. It is actually the modern day version of the metric system. The majority of the countries in the world use this measuring system, but there are few that don't, such as the United States, Liberia, and Myanmar (Burma). Canada and the United Kingdom are kind off in an in between situation, as they have this system as official, but the population still very often uses other measurements that are tradition, often leading to confusion.

This measuring system has seven base unites:

second (s) - measures time

meter (m) - measures length

kilogram (kg) - measures mass

ampere (A) - measures electric current

kelvin (K) - measures temperature

mole (mol) - measures amount of substance

candela (cd) - measures luminous intensity