Answer:
That there is still a problem
Explanation:
I'm not quite sure if this is correct, but I did a process of elimination;
'That the passage's tone is being defined' doesn't sound quite right
'That the passage's cause is being defined' is incorrect because the passage is explaining the cause's effects
And 'that the situation is resolved' is wrong because when I took the test it wasn't the right answer. Hope this helps (?)
They were diring from colds the flu or smallpox
