Answer:
I believe that it creates an encouraging tone.
Explanation:
It's basically saying how despite all the bad things something within inside him is still with hope and happiness.
I think it is a DO but I don't know what a DA is.
We can infer from Gregor's thoughts that his employer has a tyrannical streak, since he relishes making his employees fell diminished. He places himself on top of his table in order to speak to his employees (who sit on a chair) from above, using this position to intimidate them.
