New question: If a paper clip has a mass of 5 grams, which is the most accurate unit to measure that mass?
A. milligram
B. kilogram
C. centigram
D. gram***
To determine the most accurate unit to measure the mass of a paper clip, we need to consider the level of precision required. In this case, the mass of the paper clip is given as 5 grams. The gram (g) is the base unit for mass in the metric system.
Now, let's consider the given answer choices:
A. Milligram (mg): This is a smaller unit of mass, and it is equal to 0.001 grams. Although it would provide a more precise measurement, it is not necessary in this case since the mass of the paper clip is already given as 5 grams.
B. Kilogram (kg): This is a larger unit of mass, and it is equal to 1000 grams. Using kilograms would provide less precision because it would require converting the mass of the paper clip into a smaller decimal. Therefore, it is not the most accurate unit in this case.
C. Centigram (cg): This is a smaller unit of mass, and it is equal to 0.01 grams. Similar to milligrams, it would provide more precision, but it is unnecessary since the mass of the paper clip is already given as 5 grams.
D. Gram (g): This is the base unit for mass in the metric system and is equal to 1 gram. Since the mass of the paper clip is given as 5 grams, using grams would provide the most accurate measurement in this case. Therefore, the correct answer is D.