How many participated in the Katz lunch counter sit-ins?

19
17
12
15

17 or 18 cant be 19

Explanation: Clara Luper, three adult chaperones and 14 members of a local NAACP Youth Council. These are first people who were participated in the katz lunch counter sit-ins. So in total it actually make 18 nor 17 or 19. I said 17 because its the closest one can't be 19.

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explanation:

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according to the passage the most suitable options are two. the first one is "by leading the aef to victory in several key battles" like the battle of saint- mihiel and the battle of cantigny mentioned in the passage you copied here. the second one is "by the aef and allied forces defeat germany" since the passage says that his army destroy the german resistance in the meuse- argonne offensive. and also, "by insisting that the aef operate as an independent force".

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