Hi everyone,
I must admit that I don't fully agree with the phrasing of the question/answer.
We are asked to find a circumstance which, if true, will lead to there NOT being a reduction in robberies (notice the importance of the absolute term NOT). The correct answer mentions that "Police reports from the previous year show that most of the robberies occurred in the south parking lot.", however in this case, we are not dealing with an absolute anymore: even if one robbery is prevented in the North because of the increased surveillance, this has indeed reduced robberies, therefore not matching the requirements of the question.
I am unaware of whether or not such "ambiguously formulated" questions/ answers may come up on the actual exam, but this grey zone is really what led me to select another answer out of spite.
Perhaps a phrasing such as "Which of the following, if true, most strongly suggests that concentrating most additional officers in the north parking lot will not SIGNIFICANTLY reduce robberies?" would allow to clarify the ambiguity?
Thank you in advance for the answer!