Everywhere in the world, people dance to the music of their culture. (1) scientists wonder what it is about the human brain that makes music and dancing nearly universal experiences for human beings and what makes music so pleasurable. one recent study showed that when humans listen to music, their brains organize the information based on previous experience. different areas of the brain seek patterns in the music, compare it to familiar music, and seek emotional ties to earlier experiences. (2) mri scans identify how much a person liked a piece of new music by the strength of his or her brain activity. the amount of activity corresponded to how much the individual enjoyed the music and the strength of the person’s desire to buy the music. (3) people with higher activity levels expressed a willingness to pay more for the music than those with lower activity levels. (4) music has been proven to calm animals and make humans smarter. which sentence is not relevant to the paragraph and should be deleted? a) sentence 1 b) sentence 2 c) sentence 3 d) sentence 4