Answer:
The correct answer is option C, that is, open-mindedness.
Step-by-step explanation:
Of the given options, the correct option is the open-mindedness, as the ideas of Kenny and their acceptance were mainly because of open-mindedness. Elizabeth Kenny was an unaccredited nurse from Australia who treated polio in a distinct way, that is, with the help of hot baths and certain forms of exercises. It was her open-mindedness approach that led to the establishment of a novel form for the treatment of polio.