Artists at the workshop, one who is an award winner, will

Can someone provide a detailed explanation. Thanks!

The singular verb "is" in the non underlined portion implies that we are talking about a single artist. Since we need to select a single artist out of the many artist we need to use- one of whom.

Hi fozzzy.

The main idea of this question is:
Artists at the workshop will demonstrate innovative painting techniques that allow painters to create three-dimensional painting
The part: "one who is an award winner" is just modifier of Artists.

A) one who ==> Clearly wrong because "one who" does not make any sense.

B)one of them who ==> Somebody may think B is correct, but it's wrong. Why? Because "them" means Artists. So if you change "them" to "artists", the sentence will be: Artists at the workshop, one of Artists who is..... ==> Clearly wrong, because "who" modifies the preceding noun - Artists - that is plural. The usage "is" is wrong.

C)and one of them who ==> Double wrong. (1) "and" does not make sense, cause there's no parallel structure here; (2) same reason as B.

D)one of whom ==> Correct. we use "who" for objective, and "who" for subject.

E)one of which ==> "which" is wrong.

Hope it helps.

Regards.

Artists at the workshop, one who is an award winner, will demonstrate innovative painting techniques that allow painters to create three-dimensional painting

A) one who
One is not consistent with "Artists"
B)one of them who
them is redudndent here
C)and one of them who
"and" and "them" are not required
D)one of whom
Correct
E)one of which
Which modifies things ...

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