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Difficulty: HardIdentifying Necessary Assumptions

Musicologist: Recently, a collection of manuscripts containing complex polyphonic musical notation was found sealed within the original, undisturbed 11th-century stonework of the Valerius Monastery. Previously, historians believed that polyphonic music was entirely unknown in this region until the 13th century. Because the stonework has remained completely intact since the monastery's construction, it is clear that the 11th-century monks who lived at the Valerius Monastery practiced polyphonic musical composition.

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

  1. A
    If manuscripts containing complex musical notation are found within a monastery's original architecture, the residents of that monastery must have actively practiced that style of music.
  2. B
    If the 11th-century monks at the Valerius Monastery practiced polyphonic musical composition, then manuscripts containing such notation would inevitably be found sealed within the monastery's stonework.
  3. The polyphonic manuscripts were not simply documents created by outsiders that the monks stored in the stonework without ever engaging in polyphonic musical composition themselves.Answer
  4. D
    The Valerius Monastery was the only institution in the region to have access to complex polyphonic notation during the 11th century.
  5. E
    The polyphonic musical notation found in the Valerius manuscripts is structurally identical to the notation that historians previously believed originated in the 13th century.

Answer

The assumption that the manuscripts were not merely stored by monks who never engaged in the composition themselves.
The argument assumes that the mere presence of the manuscripts implies the monks actively practiced the musical composition. The correct answer defends against the possibility that the manuscripts were just stored artifacts. By applying the Negation Technique—assuming the manuscripts were just documents created by outsiders that the monks stored without ever practicing the music—the argument's conclusion is completely destroyed. This proves the assumption is strictly necessary.

Step-by-Step Solution

1
Identify the main conclusion.
The 11th-century monks who lived at the Valerius Monastery practiced polyphonic musical composition.
This is the core claim the musicologist is attempting to prove based on the physical evidence.
2
Identify the premises supporting the conclusion.
Manuscripts with polyphonic notation were found sealed in the intact 11th-century stonework of the monastery.
This establishes a timeline and physical presence of the notation at the monastery.
3
Locate the logical gap between the premises and the conclusion.
The argument equates the physical presence of a document in a building with the active practice of the document's contents by the building's inhabitants.
Possessing or storing an item does not inherently prove that the possessor understands or practices the skills contained within it.
4
Apply the Negation Technique to the correct option.
Negating the correct answer yields: 'The manuscripts WERE simply documents created by outsiders that the monks stored in the stonework without ever engaging in the composition themselves.'
If this negated statement is true, the conclusion completely falls apart, proving the assumption is logically necessary for the argument to survive.

Key Concept

Identifying Necessary Assumptions
Estimated Time:2m 0s
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Identifying Necessary Assumptions

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