Which government policy in the United States was enacted in response to the oil embargo of 1973? A. reward programs for using carpool lanes B. tax incentive for energy efficient homes C. the CAFE standard D. Highway Act E. Environment Policy Act

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.