(1) Growing up in a family where music was a daily part of life,steve and rick shared a determination to become
singing duos known nationwide
(B) to become a singing duo
(E) of becoming a singing duo
I chose E but why is B correct
(2) The primatologist has argued that sustained observation of a few animals provides better behavioral data than does
intermittent observation of many animals.
(A) provides better behavioral data than does intermittent observation of many animals
(E)in contrast to intermittent observation of many animals, provides better behavioral data
why is E wrong and A correct