Question

Difficulty: HardApplying the Negation Technique

Anthropologist: Excavations at the ancient, strictly sedentary settlement of Kaelen have uncovered ceremonial vessels containing trace residues of the cacao plant. The Kaelen people are known to have had no contact with migratory groups. Because the cacao plant is native exclusively to regions located over five hundred miles south of Kaelen, the settlement's inhabitants must have maintained direct, long-distance trade networks extending into those southern regions to acquire the beans.

Which one of the following is an assumption required by the anthropologist's argument?

  1. The inhabitants of Kaelen did not acquire the cacao beans through a series of short-distance exchanges involving geographically intermediate groups.Answer
  2. B
    Any ancient settlement that maintained trade networks with the southern regions eventually acquired cacao beans for ceremonial use.
  3. C
    Most of the populations native to the southern regions were willing to participate in the trade networks established by the inhabitants of Kaelen.
  4. D
    The ceremonial vessels found at Kaelen were not manufactured using techniques developed in the southern regions.
  5. E
    The inhabitants of Kaelen did not engage in direct, long-distance trade networks to acquire ceremonial items other than cacao beans.

Answer

The assumption that the inhabitants of Kaelen did not acquire the cacao beans through a series of short-distance exchanges involving geographically intermediate groups.
The correct answer properly bridges the gap between the origin of the beans and the specific nature of the trade. The author concludes that Kaelen had 'direct, long-distance trade networks'. For this to be true, we must assume they didn't just get the beans handed down through a chain of local, short-distance trades (intermediaries). If we negate this option—meaning they DID use intermediaries—then the author's conclusion that Kaelen itself maintained direct, long-distance networks is destroyed.

Step-by-Step Solution

1
Identify the conclusion and the premises.
Conclusion: Kaelen maintained direct, long-distance trade networks to the south. Premises: Cacao is native only to the south (500+ miles away), Kaelen was sedentary, and they had no contact with migratory groups.
Isolating the core argument structure is the necessary first step to spot the logical leap.
2
Spot the logical gap in the reasoning.
The argument leaps directly from the fact that the beans originated far away to the conclusion that Kaelen must have traded DIRECTLY with that distant region.
Identifying the gap helps predict the necessary assumption required to bridge it.
3
Apply the Negation Technique to the choices.
Negating the correct choice ('They DID acquire the beans through intermediate groups') introduces an alternative explanation that completely destroys the conclusion that they maintained 'direct' trade networks.
The Negation Technique is the definitive and most accurate test for identifying a Necessary Assumption.

Key Concept

Applying the Negation Technique
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