Which of the following issues is the most pressing environmental concern in the middle east?

The most pressing concern is solving the dispute over the land claims between Israel and Palestine. Both factions claim that the territory should be theirs and that's why the war has been going on for quite some time now, with no one letting the other side win. Sometimes the war is more active and sometimes less, but it's still going.

D.

The answer is c, i, iii, and iv. this is because farming and mining deal with harvesting raw materials, construction work falls under manufacturing, and piloting a plane is a service. ii is wrong because making bread is using  raw materials to produce goods, which would fall under the secondary sector, not primary.