4 Proficient Well-considered understanding is appropriately demonstrated. Whether directly stated or implied, responses are thoughtful and supported by details. Support is well-defined and appropriate. A defensible understanding is clearly demonstrated. Whether directly stated or implied, responses are conventional but plausibly supported.
Support is general but functional.
2 Limited Understanding is vaguely demonstrated or is not always defensible or sustained. An implausible conjecture is suggested. Responses are irrelevant or incomprehensible. The marker can discern no evidence for the capability. Responses are so deficient that it is not possible to assess the capability.