Igor stravinsky shocked the music world when writing his ballet by adding to "the firebird."

The correct answer is B) Jazz.

Igor Stravinsky shocked the music world when writing his ballet by adding Jazz to “The Fire Bird”.

Igor Stravinsky (1882-1971) was a talented music composer that later in his life became an American citizen. He wrote beautiful pieces of music such as “Symphony in C”, “The Rite of Spring”, “Symphony of Psalms”, and “Persephone.” Stravinsky shocked the music world when writing his ballet by adding Jazz to “The Fire Bird”.

The other options of the question were, a) expressionist atonic sounds, c) ragtime, and d) American influence of syncopation.  

the answer is mass marketing.

genetics is the study of how dna works, the methodologies defining the new recent technologies allow scientist to have a panoramic view of the entire dna landscape, especially how genomes interact with their environment, including off course, factors outside their organisms.

thus is very possible the existence of both scenarios, where populations of isolated individuals have different genetic traits, and share traits related to genetic mutation, due rats can easily travel overseas using human transport channels. so scientists could get a vast number of data, including human interaction, evolution of rodents, health development, spread of infections, development of new organisms, how genomes evolve in different environments and so on.