Evaluating the 'Single Output' Premise in Macroeconomics

An economist is tasked with creating a single measure of total output for an economy that produces only two goods: 100 cars and 500 software licenses. Which of the following best describes the primary challenge the economist faces, which the foundational premise of combining different goods and services into one measure must address?

Mechanism of Economic Aggregation

The foundational premise that allows economists to combine diverse products like software, haircuts, and automobiles into a single measure of economic output is valid because all these items share a common physical unit of measurement.

Critiquing Economic Measurement Methods