Final answer:
The scenario given presents an example of 'blaming oneself'. Nate is assigning the blame for his poor SAT score on his own perceived lack of effort and abilities rather than on other potential factors.
Step-by-step explanation:
The scenario illustrates an instance of C. Blaming oneself. Nate didn't perform as well as he expected on his SAT, and he is attributing this not to external circumstances, but to his own abilities and efforts, stating that he should have tried harder. He is expressing guilt and responsibility for the situation.
This indicates that he is blaming himself for his performance, which aligns with option C. This is a common psychological response where an individual might hold themselves excessively accountable for a negative outcome, despite many factors often contributing to such situations.
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