Answer:
Option D.
Step-by-step explanation:
Population statistics, is the right answer.
Economists verify their cases by examining a set of data, based on existing and exhaustive research undertaken on a particular subject, through the accumulation of observational data. The original hypothesis will be examined using such data to conclude: the hypothesis is either affirmed or discarded.
Besides population statistics, by employing econometric techniques, it is plausible to manage inference on sample data, which produces appropriate statistics to analyse a whole group.