As a physicist, astronomer, and professor, but with the showmanship of a Broadway star and the wit of a comedian, the scientist educated the masses, challenged politicians, and debunked longstanding misconceptions, although many of his colleagues disagreed with his methodology.
'and' is not suitable here.
B, C out here.
D- illogical comparison of 'he' with 'professor', 'astronomer','scientist'
OUT.
E- 'the showmanship of a Broadway star and the wit of a comedian' modifies 'professor' not 'scientist'
Also use of 'As' missing.
out.
A- best of the options. A. As a physicist, astronomer, and professor, but with the showmanship of a Broadway star and the wit of a comedian, the scientist educated the masses, challenged politicians, and debunked longstanding misconceptions, although
B. A physicist, astronomer, and professor with the showmanship of a Broadway star and the wit of a comedian, the scientist educated the masses, challenged politicians, debunked longstanding misconceptions, and
C. A physicist, astronomer, professor with the showmanship of a Broadway star and the wit of a comedian, and scientist educated the masses, challenged politicians, debunked longstanding misconceptions, and
D. As a physicist, astronomer, professor – but with the showmanship of a Broadway star and the wit of a comedian - and scientist, he educated the masses, challenged politicians, debunked longstanding misconceptions, although
E. A physicist, an astronomer, and a professor with the showmanship of a Broadway star and the wit of a comedian, the scientists educated the masses, challenged politicians, and debunked longstanding misconceptions, although