Final answer:
After examining the units and determining their relationship to the base unit, none of the given pairs have the first unit being exactly 1000 times larger than the second. Therefore, the correct response is (D) no correct response.
Step-by-step explanation:
The student is asking which pair of units has the first unit being 1000 times larger than the second. We will define each unit abbreviation and compare them in terms of the base unit.
Kilometer (km): A kilometer is 1,000 meters (m).
Milligram (mg): A milligram is 1/1,000 of a gram (g).
Centiliter (cL): A centiliter is 1/100 of a liter (L).
Centimeter (cm): A centimeter is 1/100 of a meter (m).
Option Analysis
(A) Milligram and kilogram: A kilogram is 1,000 grams, therefore a kilogram is actually 1,000,000 times larger than a milligram.
(B) Liter and centiliter: A liter is 100 centiliters, so the first unit is not 1000 times larger than the second.
(C) Kilometer and centimeter: A kilometer is 100,000 centimeters, so again, the first unit is not 1000 times larger than the second.
Based on the unit analysis, none of the pairs provided have the first unit being exactly 1000 times larger than the second, making (D) the correct response. It is important to note that unit conversions are a fundamental aspect of measurements and comparisons in science and mathematics.