Question

Difficulty: EasyIdentifying Main Conclusions

Consider the following argument:

Although many historians believe that the ancient citadel of Pergamon was destroyed primarily by earthquake activity, recently discovered structural timber fractures indicate widespread fire damage preceding any tectonic collapse. Furthermore, emergency grain storage silos discovered at the site were completely empty and sealed, suggesting the city was under a prolonged military siege prior to its collapse. Therefore, the citadel was brought down by human warfare rather than a natural disaster.

Evaluate the following statement: In the argument above, the claim that the citadel was brought down by human warfare rather than a natural disaster serves as the argument's main conclusion.

Answer: Answer

Answer

The statement is True. The claim that the citadel was brought down by human warfare rather than a natural disaster is the argument's main conclusion.
The claim is the main conclusion because it is the ultimate point toward which all the presented evidence (timber fractures, fire damage, and empty silos) leads. The indicator word 'Therefore' explicitly signals that this sentence represents the final conclusion drawn from the preceding premises.

Step-by-Step Solution

1
Identify the structural role of each sentence in the passage.
Sentence 1 introduces counter-evidence (timber fractures), Sentence 2 provides additional supporting evidence (empty grain silos suggesting a siege), and Sentence 3 presents the final inference signaled by 'Therefore'.
Understanding structural roles helps distinguish supporting premises from the main conclusion.
2
Determine which claim receives support from all other premises without acting as support for a broader claim.
The evidence of fire damage and empty silos supports the claim that human warfare destroyed the citadel.
The main conclusion is the central claim supported by the premises.

Key Concept

Identifying Main Conclusions
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