Bases on accounts of various researchers, Colstrom scientists have known for decades that for every kind of particle--whether the familiar electrons, neutrons or protons, or the more recently discovered quarks and neutrinos--there exists a particle that is its mirror image, identical in mass and amount of charge, but different in at least one crucial way.
A. Bases on accounts of various researchers
B. Basing it on various researchers’ accounts
C. With accounts of various researchers used for a basis
D. By the accounts of various researchers they used
E. Using accounts of various researchers
i would pick E.
A. Bases on accounts? unidiomatic
B. Basing it ... wrong right there already... that notorious it
... no possible antecedent
D. By the account is the wrong starting modifier for a noun, scientist
E. The scientist, using accounts of various ..., have known... ok sounds the best so far.
kudos if you like me (or my post)