Answer: Here is my answer- I hope it helps! Btw I did search this up but I change some words so I don't get in trouble again ; - ;
Explanation: A unit of measurement is a definite importance of an amount, defined and adopted by convention or by law, that is used as a standard for measurement of the same kind of amount. Any other amount of that kind can be expressed as a multiple of the unit of measurement. For example, a length is a physical amount.