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Zorluk: OrtaSufficient Assumption

Ecologist: Any wetlands conservation initiative that permanently elevates local water tables prevents the microbial decomposition of subterranean peat. Preventing the microbial decomposition of subterranean peat guarantees that a wetland will not release methane into the atmosphere. The wetlands conservation project in the Millford Basin will permanently elevate local water tables. Thus, the Millford Basin project will contribute to a net decrease in atmospheric greenhouse gas concentrations.

The ecologist's conclusion follows logically if which one of the following is assumed?

  1. A
    Any conservation initiative that contributes to a net decrease in atmospheric greenhouse gas concentrations permanently elevates local water tables.
  2. B
    A conservation initiative can contribute to a net decrease in atmospheric greenhouse gas concentrations only if it prevents the microbial decomposition of subterranean peat.
  3. Any wetland that does not release methane into the atmosphere contributes to a net decrease in atmospheric greenhouse gas concentrations.Cevap
  4. D
    The permanent elevation of local water tables is the most effective available method for reducing regional atmospheric greenhouse gas concentrations.
  5. E
    Every conservation project that prevents the release of methane completely eliminates all other forms of regional greenhouse gas production.

Cevap

Any wetland that does not release methane into the atmosphere contributes to a net decrease in atmospheric greenhouse gas concentrations.
The argument's premises establish that the Millford Basin project will permanently elevate water tables, which prevents peat decomposition, which in turn guarantees that the wetland will not release methane into the atmosphere. The conclusion asserts that the project will contribute to a net decrease in atmospheric greenhouse gas concentrations. The missing link is a rule stating that not releasing methane guarantees a contribution to a net decrease in atmospheric greenhouse gas concentrations. The credited option provides exactly this bridge, making the deductive chain 100% valid.

Adım Adım Çözüm

1
Break down the premises into a conditional logic chain
Millford Basin project -> Permanently elevates water tables -> Prevents microbial decomposition of peat -> Will not release methane into the atmosphere.
Identify the exact endpoint established by the stated premises.
2
Identify the conclusion and locate the inferential gap
Conclusion: Millford Basin project -> Contributes to a net decrease in atmospheric greenhouse gas concentrations. Gap: [Does not release methane] -> [Contributes to a net decrease in atmospheric greenhouse gas concentrations].
A sufficient assumption must supply a universal rule connecting the premise endpoint to the new term in the conclusion.
3
Evaluate the choices for a complete 100% deductive link
The statement specifying that any wetland that does not release methane contributes to a net decrease in atmospheric greenhouse gas concentrations closes the gap entirely.
Adding this premise allows the conclusion to follow deductively with absolute certainty.

Anahtar Kavram

Sufficient Assumption Deductive Bridging
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Sufficient Assumption

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