Given the question: Here's a question and a few possible answers:   Q: Learning languages is difficult.  Even in a full immersion environment you're likely to make mistakes, mistakes will cause misinterpretation, which will be uncomfortable, which will cause what?, Possible A: better communication, overthinking, frustration, misunderstandings, headaches  Why is "frustration" an answer aligned with human common sense?
The answer is:
frustration is very umcomfortable