Answer:
I am sorry but Image is not clear.
My choice would be A. It’s not B since “the conflict are” is incorrect. Not C since “they writes” is incorrect. And I believe D is incorrect since “a Nobel Prize winner” doesn’t agree with “are” — you could rewrite it as “The Nobel prize winner IS either Lessing or Gordimer”.
Answer:
There are real differences in the populations in different countries. Demographics are particularly important - that's things like average age, or where people live.
Explanation:
But not all testing data is the same - some countries record the number of people tested, while others record the total number of tests carried out (many people need to be tested more than once to get an accurate result).
I believe the answer would be the participant. These roles sound like something everyone in a group should do
Hope this helps!