Which term matches the definition: determining size by comparison with a standard unit?

• A. GDP
• B. Currency
• C. Global Trade
• D. Measure

Answer: (D)

Determining size by comparison with a standard unit is measuring. Measuring involves picking a standard unit—like meters for length, liters for volume, or kilograms for mass—and comparing the object's size or quantity to that unit to express how many units fit. This creates a precise, comparable quantity, so you can say something like the desk is 1.2 meters long or the liquid volume is 3.5 liters. It’s the basic idea behind turning a physical property into a numeric value.

GDP is a monetary value representing total economic output, not the general act of size determination. Currency is the medium of exchange or the unit of money, not a measurement of size. Global trade refers to the exchange of goods and services across borders, not the process of measuring. The term that matches the given definition is measure.