The correct answer should be A. naturalism. Naturalism is a literary movement which comes from realism, meaning that it is trying to convey realistic images, without the use of poetic language and escapism. Endless melody and grand opera aren't literary movements, and romanticism is quite opposite of naturalism - it emphasizes poetic language and escapism rather than realism.
Naturalism is an abstract development which originates from authenticity, implying that it is endeavoring to pass on reasonable pictures, without the utilization of wonderful dialect and idealism. Unending song and great musical drama aren't scholarly developments, and sentimentalism is very inverse of naturalism, it underlines graceful dialect and idealism instead of authenticity.
Answer: There's no long-distance energy transfer. This looks almost like a plain old transformer (yet with an air core) and I've never heard of a 7 kilowatt transformer wasting as much as 14 percent energy in conversion - dissipating about one kilowatt of power would just melt the transformer. How realistic is the "86% efficiency" claim?
