The application of a new method for analyzing the chemistry of tooth enamel allows scientists

to examine molars of prehuman ancestors and determining

And implies parellelims

to examine and determining ... cannot be parellel..

it is either .examining and determining

or

to examine AND to determine

The application of a new method for analyzing the chemistry of tooth enamel allows scientists to examine molars of prehuman ancestors and determining that their diets were more varied than had been supposed.

(A) The application of a new method for analyzing the chemistry of tooth enamel allows scientists to examine molars of prehuman ancestors and determining ........ to examine and (to) determining are not structurally parallel....

(B) Through the application of a new method for analyzing the chemistry of tooth enamel, the molars of prehuman ancestors were examined by scientists who determined ...Through ....is modifying the Molars, however, it actually should modify scientists

(C) When they applied a new method for analyzing the chemistry of tooth enamel, scientists examined molars of prehuman ancestors, determining
Fragment sentence + meaning is changed ( It is the application of a new method that allows the scientists and not when they applied ......)

(D) Applying a new method for analyzing the chemistry of tooth enamel, the molars of prehuman ancestors have been examined by scientists, who determined
Applying should modify the scientists and not the molars of prehuman ancestors

(E) Applying a new method for analyzing the chemistry of tooth enamel, scientists have examined molars of prehuman ancestors and determined
Applying correctly modifies the scientists . Scientists examined and determined are logically and structurally parallel and hence correct
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nice just missed the fact that this is a modifer question

good explaantin

The application of a new method for analyzing the chemistry of tooth enamel allows scientists to examine molars of prehuman ancestors and determining that their diets were more varied than had been supposed.

(A) The application of a new method for analyzing the chemistry of tooth enamel allows scientists to examine molars of prehuman ancestors and determining
analyzing and determining could be parallel but both of them talk about different things
(B) Through the application of a new method for analyzing the chemistry of tooth enamel, the molars of prehuman ancestors were examined by scientists who determined
Modifier error the modifier should modify Scientist and nothing else
(C) When they applied a new method for analyzing the chemistry of tooth enamel, scientists examined molars of prehuman ancestors, determining
Usage of when (timeline???) & they (who they ???)
(D) Applying a new method for analyzing the chemistry of tooth enamel, the molars of prehuman ancestors have been examined by scientists, who determined
Who was applying the new method ??? scientists were not properly modified
(E) Applying a new method for analyzing the chemistry of tooth enamel, scientists have examined molars of prehuman ancestors and determined

I think that is more than sufficient to reach out to conclusion that the right answer is E
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+1 for E....Good analysis of problem is posted.