<u>Answer:
</u>
Yes, it is true that researchers looking for cause-and-effect relationships will most often use epidemiological studies.
<u>Explanation:
</u>
- The functioning pattern of the epidemiological study characterizes its method and manner of probing and investigating to the depth of the issue in order to find the root cause of the problem that has been encountered.
- Thus, to probe for a cause and effect relationship, an epidemiological study would prove to be highly beneficial as it would put to use the right methods of investigation.
A is microeconomic because they are considering the slots of only one airport.
B is macroeconomic because this decision will afect each and every person in the country.
C is microeconomic because it will only affect certain employees in the stores.
D is macroeconomic because this will affect every person that is unemployed at the moment.
<span>Human sexual inadequacy.
Hope this helps !
Photon</span>
