The answer is D. redemption. Pip stayed with Magwitch because despite his aversions for the man in the earlier stages, as they got to know each other, they developed a sense of friendship. Staying with Magwitch through the boat ride is symbolic of his redemption to give thanks and gratitude for being his benefactor and also to show what friendship is.
Scarcity of resources. The European countries and Japan didn't have all the resources they needed in order to keep up industrialization and a few other reasons. They resorted to taking over other lands in order the "cheaply" obtain the resources.
Political party's unify the American people by having citizens with the same ideological beliefs that come together and set up boundaries for which to live by
B.their uses for medicinal purposes I think. Not 100% sure.