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
I believe it would be B. I kinda know what it's like.
What I don’t speak Spanish
This is evidenced by the flag that was flown over the Alamo. It was the Mexican tricolor of red, white and green modified by having 1824 sewn into the white strip. The 1824 stood for the liberal constitution that Mexico had adopted right after independence from Spain.
Two superpowers i had the same thing on OW
