Which of these is an example of infrastructure?
A
Lake Michigan, one of the largest lakes in the United States
B
the curtains on the windows of a bedroom
C
the border of Massachusetts and Connecticut
D
The Pacific Coast Highway that runs along the coast of California

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.

Magma forms by partial melting of upper mantle and crust. partial melt means that only a fraction of the available material forms a melt, and that the remainder stays solid. the partial melt rises because of its lower density and ascends through he crust. this is so conclusive mean the answer would be magma igneous rocks or balistic magma.