Logical reasoning PrepTest 133 · Section 3 · Question 13

Incorrect. While the fMRI can be used to create a likeness of the patient, that doesn't mean it isn't important to label the fMRIs correctly. That might be important for ease of use or privacy concerns.

Correct. Argument or Facts:
Facts

Question Type:
Must Be True

Stimulus Summary:
fMRI and DNA similarities - Can contain info a patient wants kept private
fMRI only - Enough info to generate the patient's face
DNA - Linked to patient only through labels

Answer Anticipation:
This argument brings up a few points of comparison between fMRIs and DNA. They both have private information, but the fMRI also contains identifying information, whereas DNA doesn't. This difference is likely to feature in the correct answer, drawing an inference about how fMRI information can threaten privacy in a way that DNA doesn't.

Answer Explanation:
An fMRI can be used to reconstruct a patient's face, so they can be identified even if the fMRI isn't labeled. A DNA profile can't do the same. So if an fMRI and a DNA profile of a patient are discovered without a label, only the former poses a threat to privacy, and thus this answer is supported.

Key Takeaway:
Comparisons frequently feature in Must Be True questions, but be sure that you limit the inferences you make to the scope of the comparisons in the stimulus!

Incorrect. There's no indication that "most" DNA profiles end up not being kept private. In fact, DNA profiles are suggested as more private than fMRIs in the stimulus.

Incorrect. While both genetic profiles and fMRIs contain information that patients want kept private, there's no indication this information overlaps.

Incorrect. There's no discussion of what patients know about the relative threat to their privacy from these two things, so this answer is out of scope.