Do you know of anyone who holds a position in healthcare that you would like to hold and what have you learned from that person? if not, what are some things that you can do to further familiarize yourself with the role/position?

The question is asking about your own experience, so you should best answer about yourself.

But I can help you by providing my own example:

I know a general practitioner in the UK. (a  medical doctor that is not a specialist, but can be seen as a first contact doctor).

I asked her what happens to veins after an injury - if they can't be properly stitched together. She answered that while those vessels would eventually dissappear, the vessels next to them would grow bigger and compensate by providing more blood to the region.

Aand b would both be correct