A theory that is internally consistent is free ofGroup of answer choicesContentContradictionsExternal dataQualifications

Breakdown of the Problem

To address the question effectively, we need to understand the context of a theory's internal consistency. Internal consistency refers to the coherence and logical structure within a theory, meaning that all its components work well together without any contradictions.

Relevant Concepts

1. Internal Consistency: This is a measure of whether the components of a theory do not contradict each other.
2. Contradictions: If a theory has contradictions, it cannot be considered internally consistent.
3. External Data and Qualifications: These aspects do not directly affect the internal consistency of a theory; they pertain to its applicability and scope.

Analysis and Detail

1. The question provides a list of potential choices that might signify what internal consistency protects a theory from.
2. Content: Refers to the subject matter or substance of the theory, but does not indicate internal harmony.
3. Contradictions: The essence of internal consistency itself; if a theory has contradictions, it cannot be internally consistent.
4. External Data: Refers to evidence outside the theory. Internal consistency does not depend on this; a consistent theory can still be externally invalid.
5. Qualifications: Could point to the limitations or conditions under which a theory holds, but again, not related to internal coherence.

Verify and Summarize

Given this analysis, the correct answer is clearly "Contradictions." A theory that is internally consistent cannot contain contradictions among its propositions or identifiers.

Final Answer

The correct choice is Contradictions. A theory that is internally consistent is free of contradictions, meaning all components align logically and cohesively without conflicting statements.