Read the excerpt from "music gets personal.” walking down the street, you still had to whistle, though. old radios and record players were too big to carry. radios had large tubes in them. those tubes made the sound louder, but they were heavy. parts of record players were made of iron. they were also too heavy to carry. even if you could carry a record player, you couldn’t play it. record players work only when they’re still. which details are included to explain the challenges of transporting music? check all that apply.

eli whitney was an american inventor best known for inventing the cotton gin. this was one of the key inventions of the industrial revolution and shaped the economy of the antebellum south.

- "a nonrestrictive clause functions as a modifier to a noun (that is an object, person or concept). these clauses can be described by the following three options: it is set off by comas, it contains a subject and a verbs and it adds nonessential information to the sentence.

for example, in "here is bill gates, who confounded microsoft software company" we can identify "who confounded microsoft software company" as a nonrestrictive clause modifying the noun bill gates. this clause can be describes as a nonrestrictive clause because it is separated by a comma, it adds nonessential information to identify who bill gates is and it must contain both a subject (who) and a verb (confounded)."