#24 - Specific Reference, Must Be True, Purpose

[Administrator]

Please post below with any questions!

[lathlee]

Hi. This Global AP, where can i find the relevant lines in the text to determine the right answer? PLZ? THX

[lilmissunshine]

Hello,

Could you explain why (D) is the correct answer? I picked (E) but didn't think any of the answers was ideal. Thanks!

[Adam Tyson]

Hey guys, happy to help square this one away for you! The relevant lines are at the very beginning of the passage, the second through fourth sentences. The question is asking why the author made this analogy (that's what "primarily in order to" means - why). So, why did he do it? First, to show that these brain scans have a legitimate medical purpose - seeing into the physical structures in the brain to diagnose stuff. But that is immediately set in contrast to neuroimaging, a "fundamentally different kind of enterprise." What the author was doing, therefore, was setting up that contrast. The purpose was to make that comparison and show a crucial difference. That's answer A.

The purpose was not to argue - answer D.

The purpose was not to show a historical relationship between the technologies - answer E.

Tackle these "in order to" (why) questions with a prephrase. Why did he do that? What did it contribute to the structure and content of the passage? Then find the answer that best matches that prephrase.