1. In the beginninget their career, the vast majority of the Beatles music was very

similar to
(1) the rock and roll tunes of the late fifties
(2)
that of Bob Dylan and musicians with staying power
(3)
eight of the nation's top len songs in
1964
(4)
American singers who were excellent
musicians
(5)
Brian Epstein, who helped their rise to fame

This sentence is incomplete and it is unclear what the intended comparison is. If we are talking about the style of music, option (1) "the rock and roll tunes of the late fifties" would be the best fitting choice.