Since a doughnut is only small, you would use either grammes or ounces - depending on the system you use.
grams which unit would you use to measure the mass of a mouse
You Use Atomic Mass Number
Kilograms
in tons.
Grams
Milligram: to measure its mass.
Mass is measured using kilograms.
The SI unit for mass is the kilogram (kg)
Fluif ounces
Mass is measured in grams.
GRAMS
kl