A question about "illness and treating"
Hey friends, I'd like to ask a question. I saw a sentence with a blank " Marie Curie saw the importance of collecting radioactive material both for research and for cases of ___''
A.illness B.treating
So which option should be filled in the blank?
One more question, " a medical technique for ___" A.treating B. soldiers
Which option is correct, why? Thanks very much.