Which is not a factor responsible for the armed conflicts that have been troubling central america for much of its history? an unequal distribution of farmland governments that serve the interests of the wealthy a growing middle class lack of available farmland

The correct answer is - a growing middle class.

The phenomenon of growing middle class in the countries of Central America is a relative unknown. The situation is more in the way of growing wealth gap between the small amount of extremely rich people and the majority that leaves on the bottom edge of the so called middle class, bordering the poverty line, or is poor. A growing middle class will have a nice and positive effect on the society, and especially in the peace department, not the other way around. 

Increased profits reduced health risks

Water flows along the east coast and across the western tropical pacific towards south america, while they both are directed towards that way,  el niño does not directly affect the southern flow of water along the coast.