The main purpose of the passage is to А
argue that scientific studies need to be more
efficient.
B
describe the results of a scientific study.
.
C
explain the history of scientific inquiry.
D
highlight the fraudulent nature of many research
studies.
E
I would be guessing.

What passage...?

Explanation:

the histogram that represents the data with the largest spread is data set b

answer:

i havent taken the psat, but i have the sat, make sure to bring some snacks, because youre in there forever, 2 sharp number two pencils, an sat approved calculator, and maybe a jacket.   your phone and any books will be taken up, so don't try to bring them(but they will be given back at the end of the testing).   good luck!   i hope you do well!