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- PrepTest 120
- Section 2, Question 20
Until recently, biologists were unable to explain the(439 more words not shown)
According to the passage, the(10 more words not shown)
- Athe host is(9 more words not shown)
- Ba thriving parasite(5 more words not shown)
- Ca parasite must(11 more words not shown)
- Dthe parasite eventually(7 more words not shown)
- Eultimately the host(6 more words not shown)
Reading the passage
Whose view are we describing? The prevailing view introduced at the beginning, not the newer explanation. That view expects host and parasite eventually to coexist without the parasite harming the host. Its rationale is that the parasite benefits from keeping its host well.
Working the answers
- A
Harming the host enough to prevent the parasite from thriving is the opposite of the benign relationship this view predicts.
- B
This also substitutes incapacitation for the expected harmless coexistence.
- C
The prevailing explanation relies on continued coexistence with the host. It doesn't say the parasite must eventually leave for a new one to survive.
- DCorrect
The text describes a “benign coexistence” and explains that parasites thrive because their hosts thrive. D states that expected outcome: the parasite thrives without harming its host.
- E
This reverses the relationship. The account explains how the parasite benefits from the host's well-being; it doesn't make the host's success depend on the parasite's success.
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