To calculate the total mass of the box in grams, we need to first calculate the total mass of the 4 bags of sugar in kilograms, and then convert that to grams.
The mass of one bag of sugar is 6 kilograms.
The total mass of all 4 bags is:
4 bags x 6 kilograms/bag = 24 kilograms
To convert 24 kilograms to grams, we multiply by the conversion factor of 1000 grams/kilogram:
24 kilograms x 1000 grams/kilogram = 24,000 grams
Therefore, the total mass of the box, including all 4 bags of sugar, is 24,000 grams.
The correct answer is B) 24,000 grams.