The advertising executives were in ______ over continuing their latest successful, yet highly controversial, ad campaign;they could not decide on a course of action.
根据后半句“they could not decide on a course of action”可知,主管们没法决定是否采取行动,他们受到了一定的阻碍,因此,选项中表达“阻碍”这层含义的词只有quandary(困惑,窘境)和predicament(困境,窘况),因此,选择B、F两项。句意是,“广告主管们对于是否继续进行近来颇为成功却饱受争议的广告活动感到进退两难;他们无法就是否采取行动做出决定。”