At the camp, arabs and israelís meet for the first time and they learn to get along.

Your brief note makes me think of the Seeds of Peace Camp which began in  the USA, in 1993.  John Wallach had the idea for the camp, and proposed it at a state dinner that included leaders from Israel, Egypt and Palestine.  He challenged them to send 15 teens from each of their countries to the new camp he was establishing in Maine, which would become known as the Seeds of Peace Camp.

The answer is c. hope that