Answer:
Option A, 1 kg = 1000 g
Explanation:
In the term 'kilogram,' abbreviated as kg, the suffix "kilo-" denotes 1000 of the unit that follows. So 1 kilogram is equal to 1000 grams, 1 kg = 1000 g.
This is the only correct conversion of the answer choices. Below is how other conversions should read to also be correct.
Why Not Other Options:
In the term 'milliliter,' abbreviated as mL, the suffix "milli-" denotes one thousandth of the unit that follows. So 1 milliliter is 1/1000 of a liter, meaning it would take 1000 milliliters to equal 1 liter. This conversion should read:
1 L = 1000 mL
In the term 'microgram,' sometimes abbreviated as mcg or μg, the suffix "micro-" denotes one millionth of the unit that follows. So 1 microgram is 1/1,000,000 of a gram, meaning it would 1 million micrograms to equal 1 gram. This conversion should read:
1 g = 1,000,000 mcg
We learned above that milli- means 1/1000 so milligram is 1/1000 of a gram. So 1000 milligrams equals 1 gram. We can use this to determine how many micrograms there are 1 milligram.
1000 mg = 1,000,000 mcg
Divide both sides by 1000
1 mg = 1,000,000 / 1000 mcg
1 mg = 1000 mcg is how the conversion should read in option D. There are 1000 micrograms in 1 milligram.
