Logical Reasoning

PT126 · S1 · Q4 Among the various models

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Among the various models of Delta vacuum cleaners, one cannot accurately predict how effectively a particular model cleans simply by determining how powerful its motor is.

Evidence

The efficiency of dust filtration systems varies significantly, even between models of Delta vacuum cleaners equipped with identically powerful motors.

Conclusion

Among the various models of Delta vacuum cleaners, one cannot accurately predict how effectively a particular model cleans simply by determining how powerful its motor is.

Evaluate

The term "powerful motor" appears in both the evidence and the conclusion and hints that this argument works by linking terms. By connecting the other terms in the assumption, the argument is made whole. To bridge the gap, the answer should connect dust filtration systems with the cleaning effectiveness of a Delta vacuum cleaner.

4.

The argument's conclusion is properly drawn if which one of the following is assumed?

  1. Correct

    For each Delta vacuum cleaner,

    Why this is right

    This answer connects the cleaning efficiency of a Delta vacuum with the efficiency of its dust filtration system.

    Skill tested: Sufficient Assumption · how this choice captures the argument's function is the move to repeat next time.

    82% picked this

  2. One can accurately infer how

    Weakens

    This undermines the argument by questioning the argument's own support.

    10% picked this

  3. All Delta vacuum cleaners that

    Out of Scope

    This addresses the wrong point. The argument is whether Delta vacuums with identically powerful motors clean with equal effectiveness.

    2% picked this

  4. For any two Delta vacuum

    Weakens

    This would only make it easier to predict how effectively a Delta vacuum cleans by determining how powerful the motor is.

    2% picked this

  5. One cannot accurately assess how

    Out of Scope

    This is about assessing how effective the vacuum cleaner was rather than predicting how well it will clean. The issues are related but not the same; the former is about the past, while the latter is about the future.

    4% picked this

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