There are 1,000 g in every kilogram. if a box has a mass of 483 g, what is the mass of the box in kilograms? a. 48,300 kg b. 48.3 kg c. 0.483 kg d. 483,000 kg

This is the concept of conversion of units. The question requires us to convert the units from grams to Kgs
Given that 1000g=1 kg, the number of kgs in 483g mass will be given by:

1000g=1kg,
thus;
483g=483/1000kg
=0.483 kg
The answer is C.0.483