As a result of a supernova explosion, every human being

[bhazarik]

As a result of a supernova explosion, every human being on Earth was bombarded on February 23, 1987, by about 100 billion neutrinos; fortunately, neutrinos are harmless elementary particles that are produced in nuclear reactions and that interact very weakly with matter.

(a) neutrinos are harmless elementary particles that are produced in nuclear reactions and that
(b) neutrinos, which are harmless, are elementary particles produced in nuclear reactions and which
(c) neutrinos are harmless elementary particles produced in nuclear reactions and which
(d) these harmless elementary particles are produced in nuclear reactions, and neutrinos
(e) these elementary particles, harmless products of nuclear reactions, are neutrinos that


Not sure if my reasonings are ok. Please explain
(a) no grammatical error
(b)&(c) "and which" is incorrectly referring to nuclear reactions
(d) changing the meaning of the sentence
(e) not very sure but is probably changing the authors intent

Please explain

[RonPurewal]

http://www.manhattangmat.com/forums/gma ... t3419.html