what set the boarder between the Western US and Western British North America (Now canada) at the 49th parallel

Which of the following scenarios is the result of a lack of education or experience? a. a man dislikes hearing about the holocaust because he is a survivor. b. a burn victim doesn’t like to be near any flames. c. a child refusing to eat broccoli because of its color. d. a woman dislikes smokers because the smoke makes her cough.