While Noble Sissle may be best known for his collaboration with Eubie Blake, as both a vaudeville performer
and as a lyricist for songs and Broadway musicals, also enjoying an independent career as a singer with such groups as Hahn's Jubilee Singers.
(A) and as a lyricist for songs and Broadway musicals, also enjoying
(B) and writing lyrics for songs and Broadway musicals, also enjoying
(C) and a lyricist for songs and Broadway musicals, he also enjoyed
(D) as well as writing lyrics for songs and Broadway musicals, he also enjoyed
(E) as well as a lyricist for songs and Broadway musicals, he had also enjoyed
The parallel marker here in the non-underlined portion is "both" hence it has to be followed by "and" the idiomatic construction is "both...and...".
Another parallel marker in the sentence is
and in the starting of the underlined portion of the sentence.
In option A, the and is followed by "as a lyricist for songs" noun phrase, but we don't need to repeat as, as it has already been used in the non underlined portion in a way that using it agin isn't required.
Hence the answer option we need to look as per the parallelism is "and a lyricist" that needs to be parallel to "a vaudeville performer".
Hence Option C is a clear winner.