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Difficulty: HardEliminating Redundancy

Many modern ecologists argue that the introduction of non-native species often disrupts local ecosystems, causing a disturbance that upsets the natural balance that previously existed beforehand.

Which of the following choices is the most effective replacement for the underlined portion of the sentence?

  1. A
    NO CHANGE
  2. B
    altering the natural balance, this disrupts the food web
  3. altering the natural balanceAnswer
  4. D
    altering the natural balance. Because they compete for resources

Answer

altering the natural balance
The correct option, which replaces the underlined text with 'altering the natural balance', is the most concise choice. It successfully eliminates the redundant phrasing of the original sentence without introducing any grammatical errors.

Step-by-Step Solution

1
Analyze the underlined portion of the sentence for redundancy.
Identify that 'causing a disturbance' and 'upsets' repeat the concept of 'disrupts' in the main clause, and 'previously' and 'beforehand' are redundant synonyms.
Redundancy must be eliminated to make the sentence concise and clear.
2
Evaluate the remaining options for grammatical correctness and conciseness.
The option stating 'altering the natural balance, this disrupts the food web' introduces a comma splice. The option stating 'altering the natural balance. Because they compete for resources' introduces a sentence fragment. The option stating 'altering the natural balance' is both grammatically correct and concise.
The correct choice must eliminate redundancy while maintaining proper sentence structure.

Key Concept

Eliminating Redundancy
Estimated Time:1m 0s
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Topics

Eliminating Redundancy

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