Daniel Hale Williams' motivations were to succeed in the first heart surgery and to overcome discrimination.
He contributed to science by helping advance the needed technology for heart surgeries-- after he complete the first ever heart surgery, scientists looked into antibiotics and proper technology so the heart surgeries in the future would be much more easier.
The line in this excerpt that uses the logical fallacy of ad hominem is this one: "The police, as usual, were as friendly as could be, but, because of the complaint, we had to turn down the volume." Ad hominem refers to the <span>logical fallacy in which an argument is rebutted by attacking the character</span>
This personification includes human actions. Quivering and bending are both actions we can perform, not emotions, feelings, or characteristics.