Which geographic region in chile would be most difficult to develop? a) the atacama desert b) the andes mountains c) the central valleys eliminate d) the pacific coastline

The answer is A) the Atacama Desert

Cause of he different elevations  hope this ?

This would be an open primary. a closed primary people can vote only prior to election day if the party if they are registered. independent voters can not participate. there is not a wide-open primary, but there is a semi-open primary.