The sun converts matter into energy in the O corona.
O convective zone.
O radiative zone.
O core.

Convective zone I am pretty sure !:)

The answer is b im not sure 

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.