SC

[ukr.net]

Originally developed for detecting air pollutants, a technique called proton-induced x-ray emission, which can quickly analyze the chemical elements in almost any substance without destroying it, is finding uses in medicine, archaeology, and criminology.

A Originally developed for detecting air pollutants, a technique called proton-induced x-ray emission, which can quickly analyze the chemical elements in almost any substance without destroying it,
B Originally developed for detecting air pollutants, having the ability to analyze the chemical elements in almost any substance without destroying it, a technique called proton induced x-ray emission
C A technique originally developed for detecting air pollutants, called proton-induced x-ray emission, which can quickly analyze the chemical elements in almost any substance without destroying it,
D A technique originally developed for detecting air pollutants, called proton-induced x-ray emission, which has the ability to analyze the chemical elements in almost any substance quickly and without destroying it,
E A technique that was originally developed for detecting air pollutants and has the ability to analyze the chemical elements in almost any substance quickly and without destroying the substance, called proton-induced x-ray emission,

The ANS is A, but why it isn't C?

[sujaysolanki]

proton-induced x-ray emission' seems to refer to air pollutants, whereas should refer to technique ..misplaced modifier

[maverick2007]

The opening modifying statement rightly modifies the "technique" and again the "which.... " rightly qualifies the technique.

Moreover, in C "A technique originally developed for detecting air pollutants" before the comma seems to modify "called" rather than the technique.

[Danielle]

C is wrong because of the unnecessary comma between pollutants and called.