Why do geologists believe that part of the african continent will break off in the next 50 million years? a. it has active volcanoes b. it experiences severe earthquakes c. it is near a mid-ocean ridge b. it is part of a rift valley

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.