West coast regions adjacent to subtropical high pressure cells tend to have a. cool and moist weather with high rainfall amounts b. warm and moist weather with thunderstorms c. dry and warm weather with cool ocean currents d. dry and cool weather with warm ocean currents

Brand c i think that should be it

Answerbecause of improved transportation, communication, and other advantages;

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.