PrepTest 137, Section 1, Question 18
Passage A Until recently, conservationists were often complacent(466 more words not shown)
Passage A(224 more words not shown)
Passage B(250 more words not shown)
Which one of the following(10 more words not shown)
- AThe loss of(19 more words not shown)
- BThe alteration of(16 more words not shown)
- CThe expansion of(12 more words not shown)
- DCultures can only(12 more words not shown)
- EWhile horticulturalists can(12 more words not shown)
Reading the passage
We've already identified B's main point: introduced species often change an ecosystem without destroying it. A change in its familiar composition isn't automatically a loss to condemn. B also allows exceptions, so our comparison shouldn't promise that outside influences can never do harm.
Working the answers
- A
This focuses on losing an old possession as it wears out. Where is the new contribution that changes the collection? An evolving wardrobe with new pieces would be closer to B's argument than the simple loss of one item.
- BCorrect
Music from outside a culture changes its folk music, just as introduced species change an ecosystem. Saying the change isn't always lamentable matches B's refusal to treat transformation as inherently regrettable. The comparison also leaves room for particular changes to be harmful or unwelcome.
- C
A claim that development is necessary for progress doesn't match B's argument. B says introductions needn't be destructive, not that ecosystems must experience them in order to progress.
- D
Can only benefit rules out harm from the outside ideas. B makes a qualified defense and expressly acknowledges costly damage and extinctions. This answer removes the exceptions that remain part of B's position.
- E
Human-made and naturally occurring hybridization are two ways a process can happen. B's central distinction concerns the effects and evaluation of introductions, not whether humans or natural forces cause them.
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