PrepTest 120, Section 2, Question 26
Until recently, biologists were unable to explain the(439 more words not shown)
The primary purpose of the(3 more words not shown)
- Acompare examples challenging(10 more words not shown)
- Bargue that the(14 more words not shown)
- Coffer a modification(7 more words not shown)
- Dattack evidence that(7 more words not shown)
- Eexamine the origins(7 more words not shown)
Reading the passage
Our main-point prediction explains how a pathogen can succeed even while severely harming its host. For purpose, ask what that explanation does to the prevailing view: it adds a way of achieving success that benign coexistence doesn't account for.
Working the answers
- A
Examples do appear, but comparing examples on opposing sides isn't the overall purpose. They develop and qualify the new explanation about transmission and virulence.
- B
The writer doesn't preserve the prevailing conclusion while merely replacing its reason. The modification allows success through harmful relationships as well as benign ones.
- CCorrect
Keeping the host well is one possible route to survival; sufficient transmission to new hosts is another. The discussion modifies the prevailing view to accommodate pathogens that incapacitate or kill their hosts.
- D
No particular body of evidence for the prevailing view is attacked. The writer presents an additional explanation and illustrates its implications.
- E
The opening states the prevailing view and its rationale, but doesn't trace its historical origins. The focus is how the new explanation changes our understanding.
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