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,

can you kindly help me with this question.
Please explain reasons for your answer

I got the same answer, but OA is A.
can someone have an explanation for that?

Called proton-induced X-ray emission should
be placed next to a technique and should
not be set off by commas; relative clause
introduced by which incorrectly and
illogically modifies emission.

that is the Official guide 12 edition explanation.
I dont understand why "which" here is not referred to A technique..

if you want to check is the question 107

but in A, which is modifying emission, and that is incorrect, isnt it?

thanks.
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A it is. it is the technique which is called "... emission". they should stick with each other.

can anyone help to find out the principal clause and all the subordinate clauses. I think we are missing comma..
Here the principal clause has two verbs.

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,

'which' modifies 'proton-induced X-ray emission' (a technique). so this is correct usage.
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I picked A for this question:

A. Modifiers are placed accurately.

B. The problem with this answer is that the 2 initial modifiers should be modifying "a technique." However, "having" seems to modify the first modifiers. Also, these modifiers are misplaced because they should be placed on either side of "a technique."

C. Again, misplaced modifiers here. "Which" seems to be modifying "emission" - definitely incorrect.

D. Again, misplaced modifiers. "Which" is modifying "emission" - this is incorrect.

E. "Called proton induced X-ray emission" should be modifying technique. This is so far away from "technique" that is becomes confusing.

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 usage of having is incorrect

(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, called should be placed right next to technique without any comma

(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, called should be placed right next to technique without any comma

(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,called should be placed right next to technique without any comma
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