Which change most reduced fertility rates in less developed countries? a. building hospitals and healthcare facilities
b. providing more education for girls
c. implementing pro-natalist policies
d. discouraging the use of birth control/contraception
e. promoting fundamentalist religious values

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.