Good scientific writing is clear
it avoids unnecessary detail and simple
it uses direct language
avoiding vague or complicated sentences.
The correct answer is a.Holding her note cards, the woman stepped up to the microphone ready to give her speech..
That is because it is the most grammatically acceptable sentence of all the ones mentioned here as it has both the proper syntax and proper punctuation.
Because he or she could hurt thereself performing the duties they do to keep the patient alive there putting thereselfs at risk for others and thats brave because most people wouldnt do those things.
Honestly all of them but A is the most valid answer since most of us contribute to the entirety of social media.