Answer:
C, Let the speaker finish, review the ground rules, and ask the group a new question.
Explanation:
If I were to read " Stop the Spread of Superbugs" I would ask " I would ask what are Superbugs and how did they start spreading in the first place?"
On the second one I would ask, "How would resisting antibiotics be a threat in 2013?", and " Was here a virus that started?"
Chron is the greek root word for 'Time'.