As an Actress and, More Importantly, as a Teacher of Acting, Stella Adler was one of the most Influential Artists in the American Theater, Who Trained Several Generations of Actors Including Marlon Brando and Robert De Niro.

Question: As an actress and, more importantly, as a teacher of acting, Stella Adler was one of the most influential artists in the American theater, who trained several generations of actors including Marlon Brando and Robert De Niro.

(A) Stella Adler was one of the most influential artists in the American theater, who trained several generations of actors including
(B) Stella Adler, one of the most influential artists in the American theater, trained several generations of actors who include
(C) Stella Adler was one of the most influential artists in the American theater, training several generations of actors whose ranks included
(D) one of the most influential artists in the American theater was Stella Adler, who trained several generations of actors including
(E) one of the most influential artists in the American theater, Stella Adler, trained several generations of actors whose ranks included

“As an actress and, more importantly, as a teacher of acting, Stella Adler was one of the most influential artists in the American theater, who trained several generations of actors including Marlon Brando and Robert De Niro.” - is a GMAT sentence correction question. These types of questions contain grammatical errors in the underlined sentence and we have to choose the correct statement from the options. GMAT sentence correction is a part of GMAT verbal.

Answer: C
Explanation:

The given sentence correction question is tested by the given-below rules:

• Parallelism
• Comparison of two elements
• Modifiers

As an actress and, more importantly, as a teacher of acting, Stella Adler was one of the most influential artists in the American theater, who trained several generations of actors including Marlon Brando and Robert De Niro.

(A) This choice alters the meaning of the sentence through the phrase “several generations of actors including Marlon Brando and Robert player“; the development of this phrase illogically implies that Marlon Brando and Robert De Niro were individually a generation of actors that Stella Adler trained; the intended meaning is that Stella Adler trained many generations of actors, and these generations included Marlon Brando and Robert De Niro.
(B) This answer choice incorrectly places information that's important to the core meaning of the sentence – the actual fact that Stella Adler was “one of the foremost influential artists within the American theater“ – between two commas; please remember, the knowledge needed to keep up the core meaning of the sentence must not be placed between two commas.
(C) Correct. This answer choice uses the phrase “whose ranks included”, conveying the intended meaning – that Stella Adler was one amongst the foremost influential artists within the American theater because she trained several generations of actors whose ranks included Marlon Brando and Robert role player.
(D) This answer choice alters the meaning of the sentence through the phrase “several generations of actors including Marlon Brando and Robert player“; the development of this phrase illogically implies that Marlon Brando and Robert De Niro were individually a generation of actors that Stella Adler trained.
(E) This answer choice incorrectly places information that's important to the core meaning of the sentence – the very fact that Stella Adler was “one of the foremost influential artists within the American theater“ – between two commas; please remember, information needed to take care of the core meaning of the sentence must not be placed between two commas.

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