I think the answer would be : Ad hominem
It's a form of argument whcih directed to a person based on his/her position that they're into or the personal relation that he/she has within the argument
In this case, this argument will not be viable if her mother is not an immigrant
hope this helps
Your answer would be “ b “ !
Pretty sure it's Desensitization
Can't answer 'cause you didn't provide an image of the passage.
