Question

Which of the following prefixes is best for measuring large quantities like the mass of a person?

milli
kilo
deci
deca

Answer 1

The metric unit for weight is kilo.

Answer 2

Kilo, for kilogram is the best to use for easuring the mass of a person. 1 Kilogram (Kg) = 1000 grams. For example, I have 60 kilograms (132.27 pounds).

Mili is used for very small quantities (Mili = 1/1000 grams). Deci = 1/10 grams and deca 10 kilograms = 10.000 grams. Good luck !