Answer :
The ideas that times of adversity reveal the true nature of people are the following: "They sift out the hidden thoughts of man and hold them up in public to the world."
- This implies that times of adversity reveal the thoughts of men to everybody to see or hear.
"But their peculiar advantage is that they are the touchstones of sincerity and hypocrisy and bring things and men to light….”
- This implies that the times of adversity reveal individuals' pretense and honestly for everyone to see.
Hence, in this case, the correct answer is options A and C.
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