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
The correct answer is the <span>frustration-aggression principle
The </span>frustration-aggression principle refers to the process in which frustration fuels feelings and sensations of anger, which in turn leads people to engage in aggressive behavior. In this instance, a pitcher is likely to feel frustrated after a <span>previous batter has hit a home run. This in turn might lead the pitcher to hit the next batter due to feelings of frustration and anger. </span>
Because of the angler destiny
When the Second National Bank’s charter was to be renewed in 1832, President Jackson:
Vetoed the bill and proposed a new national bank.
