Answer:
My guess would be voting rights.
Explanation: During the congress it was a voting time so it would be related.
I think the answer is commas.
Esoteric means that only a small number of people know what it means. (Kinda funny now that I look at the situation)
For example,
The debate was esoteric
Which is basically saying,
The debate wasn't able to be understood by many people.
Answer:
The red one
Explanation:
Because it shows that people were even willing to go behind the waterfall to see its beauty.