Which action of ji-suk's develops the theme that adapting to cultural change is difficult? a) “'i have to get this beef marinating, otherwise in a half hour i'm going to lose a bunch of hungry tax consultants to the chicken and waffle guys across street.'” b) "she threw a kitchen towel at him, and it unfurled in midair and landed on his head, draping itself over the brim of his cap." c) “she wasn’t sure, however, whether she was doing the right thing, as seo-jun didn’t seem to want to play sports, nor did he have any serious hobbies.” d) "still, she was determined not to force seo-jun to do the things her mother had forced her to do."