Segundo o padrão da National Institute of Standards and Technology a alternativa correta é a letra E) 400 músicas. Segundo o padrão disposto acima, dois Giga Bytes equivalem à dois mil Mega Bytes, assim, se cada música tem exatos 5MB, podemos chegar ao total de músicas que podem ser gravadas em um PenDrive de 2GB livres do seguinte modo :


A evolução da microeletrônica possibilitou uma capacidade de armazenamento cada vez maior a cada ano. O desenvolvimento de novas tecnologias na área permite também que os produtores possam produzir músicas, fotos e vídeos com cada vez mais qualidade (consequentemente mais pesada).
Straw man
eg. "Senator Jones says that we should not fund the attack submarine program. I disagree entirely. I can't understand why he wants to leave us defenseless like that."
Ad hominem
eg. “How can you argue your case for vegetarianism when you are enjoying your steak?”
Over simplication
eg. President Bush wants our country to trade with Fidel Castro's Communist Cuba. I say there should be a trade embargo against Cuba. The issue in our election is Cuban trade, and if you are against it, then you should vote for me for president.
Bandwagon
eg. Everyone is selfish; everyone is doing what he believes will make himself happier. The recognition of that can take most of the sting out of accusations that you're being "selfish." Why should you feel guilty for seeking your own happiness when that's what everyone else is doing, too?
Black or white
eg. Well, it's time for a decision. Will you contribute $20 to our environmental fund, or are you on the side of environmental destruction?
Answer:
First you read the question and numbers, then you use the numbers in the correct way and you try reallllyyy hard, you will find your answer! Hope this helps! :D