The spectacular disintegration of a comet last year in full view of ground- and space-based telescopes provided new insights into how comets form and may thus force a rethinking of the role of comets in the delivery of organic compounds to the evolving Earth.
(A) The spectacular disintegration of a comet last year in full view of ground- and space-based telescopes provided new insights into how comets form and may thus force - AND is a parallel marker. Clause AND Clause - perfect.
(B) The spectacular disintegration of a comet last year in full view of ground- as well as space-based telescopes, provided new insights into how comets form and thus possibly forcing - comma + provided is no longer a verb. Now provided is acting as a verbal modifying the nearest noun i.e. telescopes. So, there is no VERB. The sentence is a fragment.
(C) When a comet's spectacular disintegration occurred in full view of ground- and space-based telescopes last year, it provided new insights into how comets form and thus may possibly force - "it" referring to the act of disintegration - the use of pronoun for action is wrong.
(D) Last year, in full view of ground- and space-based telescopes, a comet's spectacular disintegration provided new insights into how comets form and thus possibly forcing - After AND, we have a phrase. Not parallel.
(E) Last year, in full view of ground- as well as space-based telescopes, the spectacular disintegration of a comet has provided new insights into how comets form and may thus force - last year means past. The use of present perfect for past is wrong.