1. Often, as more people are added to a single job, the marginal return decreases (Brook's law). This is due to several reasons. With more people, communication and synchronization become increasingly difficult. Also, it takes some time for new employees to become as productive as older ones. Finally, if the work is highly divisible, it might just take them longer because they might get in each other's way. Therefore, the first advice would be to check the personnel and try to remove any employee who is superfluous.
2. Diminishing returns is the decrease on marginal output as one production factor increases and all the other ones stay the same. So another solution would be to try to increase all the other factors that have not been increased yet.
The answer is b) Estate stratification.
This stratification system was a long-run result of feudalism since it fell under the same principles:
1) There's a social hierarchy in which there were a noble class and a peasant class.
2) Only the noble class could have land ownership, and the peasant (or serf) class must work it for the noble's usufruct.
This system of stratification was upheld not only by illustrated monarchies but also by modern nation-estates (like the U.S.), this is how it received the name of estate stratification.
Answer: Karen is most likely using a STRUCTURED INTERVIEW.
Explanation: A structured interview commonly used in survey research is a type of formal meeting, in person, for the assessment of a candidate or applicant that each individual is presented with the same exact question in the same order.
This is a means of collecting data for a statistical survey. The choice of answers to the questions is often fixed. Though open-ended questions can also be included within a structured interview.
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