Professor jenner was interested in using census bureau data to examine the trend in unemployment rates in the united states. however, jenner’s definition of unemployment did not match the one used by the census bureau. jenner was dealing with the issue of
a. reliability.
b. validity.
c. the ecological fallacy.
d. ideal types.
e. verstehen.

The correct answer is b) validity

Explanation:

In relation to research and measurement, the term validity refers to the extent in which the numbers obtained from research are measuring what the observer intended to measure in the first place. More specifically, Professor Jenner is dealing with an issue of construct validity, which asks whether or not the information obtained measures what it is supposed to measure and how truthful are the inferences drawn from the observation.

"choosing is refusing" means individuals face an opportunity cost with each decision they make. economists state that every decision involves trade-offs. opportunity cost is the least desirable alternative given up as a result of a decision.

can you explain it better