Which of these thesis statements is most restricted, precise, and unified?

A)Listening to music can be beneficial for a number of reasons.
B)Coldplay is one of the more popular bands touring today.
C)Downloading music from the Internet saves time and money as well as exposes music lovers to a variety of music genres and artists.
D)The music of Coldplay has been influenced by Echo and the Bunnymen, Kate Bush, and George Harrison.

1 . Din cei 30 de elevi ai unei clase , 18 au obtinut la teza la matematica note peste 7 . Ce procent reprezinta acestia din efectivul clasei ?

 2.Un elev aflat intr-o excursie de 3 zile a facut urmatoarele cheltuieli : in prima zi a cheltuit 32% din bani , a doua zi a cheltuit 75% din bani din cat a cheltuit prima zi , iar a treia zi , restul de 176 de lei . Ce suma a avut elevul si cat a cheltuit in fiecare zi ?

3.Un automobil a parcur