I think that the key point here is the "easily reproducible" - because all of them can be scientific questions (even a! it could tell us about about the human psyche!)
but d. is the best answer for a reproducible experiment. B could also make a good experiment, but it would be too expensive to be easily reproducible. C is calling for a more complex analysis that is too complex for an experiment. And a would require more questionnaires than experiments
Those in the upper-class tend to hoard resources and be less generous than they could be.
But the differences between people of upper and lower-classes seems to be the product of the cultural environment, not ingrained traits. Studies have found that as people rise in the classes, they become less empathetic.
Answer:
It's option B. Eun Sun lacks perceived organizational support.
The reason I chose this option is that perceived organizational support means that an individual working for the company is receiving good remarks or support for their hard work done. This is exactly what Eun Sun is in need of but unfortunately, her boss, fails to understand this and instead keeps giving her a hard time. Now, only if he were to say things like, "thank you for your hard work," or " you did great", Eun Sun would probably want to work even harder and better. Supportive words and encouragement can take you far.
Answer:
Because nobody up there has any sense to act right.
Explanation: