The correct answer is B. 1 kilogram (kg)
Step-by-step explanation:
Mass refers to the amount of matter that can be found in an object or body, this property can be measured using different units such as grams, kilograms, decagrams, centigrams, etc. although each of this, measures different amounts of mass. In this way, the kilogram (kg) is the most common unit used for mass and the largest from the options presented, as a nanogram is equivalent to
kilograms, a milligram is equivalent to
kilograms and a centigram is equivalent to
kilograms, which means all nanograms, milligrams, and centigrams are smaller units than kilograms.