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Harshgmat
The pharmaceutical company should add many new strains of the disease to Prevnar, making the vaccine much more effective than 10 years ago.

(A) making the vaccine much more effective than 10 years ago

(B) and make the vaccine much more effective than 10 years ago

(C) making the vaccine much more effective than it was 10 years ago

(D) to make the vaccine much more effective than 10 years ago

(E) in making the vaccine much more effective than it was 10 years ago

Find 3 : 2 split --> Comma + verb-ing = Modifies the preceding clause ( Only A and C remains )

Errors in other options (Comparison) marked in red, answer must be (C)
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Harshgmat
The pharmaceutical company should add many new strains of the disease to Prevnar, making the vaccine much more effective than 10 years ago.

(A) making the vaccine much more effective than 10 years ago

(B) and make the vaccine much more effective than 10 years ago

(C) making the vaccine much more effective than it was 10 years ago

(D) to make the vaccine much more effective than 10 years ago

(E) in making the vaccine much more effective than it was 10 years ago

Find 3 : 2 split --> Comma + verb-ing = Modifies the preceding clause ( Only A and C remains )

Errors in other options (Comparison) marked in red, answer must be (C)

hello Abhishek,

Don't we need to use to form of the sentence to show the intention? Please explain.
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Abhishek009

hello Abhishek,

Don't we need to use to form of the sentence to show the intention? Please explain.
Agreed that "to form " (Infinitive form) purpose of something , however check carefully the intended meaning of the sentence and also the comparison error (As referred to in option D)

vaccine much more effective than 10 years ago : VAccine can not be compared to 10 years ago

A correct comparison must be Vaccine of the present day, compared to vaccine 10 years ago
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Abhishek009

hello Abhishek,

Don't we need to use to form of the sentence to show the intention? Please explain.
Agreed that "to form " (Infinitive form) purpose of something , however check carefully the intended meaning of the sentence and also the comparison error (As referred to in option D)

vaccine much more effective than 10 years ago : VAccine can not be compared to 10 years ago

A correct comparison must be Vaccine of the present day, compared to vaccine 10 years ago

Hello Abhishek,

Absolutely, option D has the comparison error. After reading the sentence, I figured out two errors - one is the wrong usage of verb+ing form(Making) and another one is the comparison error.
So basically, my doubt is that somehow verb+ing form is correct here. Could you please explain?

I believe the best answer is - The pharmaceutical company should add many new strains of the disease to Prevnar to make the vaccine much more effective than it was 10 years ago.


Please let me know your thoughts.

Regards,
Arup Sarkar
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ArupRS
my doubt is that somehow verb+ing form is correct here. Could you please explain?
comma + verb ing usage is vorrect as it correctly modifies the previous clause

Please check this link for Verb Ing modifier it will clear all your doubts

https://gmatclub.com/forum/usage-of-ver ... 35220.html

Hope this helps
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Harshgmat
The pharmaceutical company should add many new strains of the disease to Prevnar, making the vaccine much more effective than 10 years ago.

(A) making the vaccine much more effective than 10 years ago

(B) and make the vaccine much more effective than 10 years ago

(C) making the vaccine much more effective than it was 10 years ago

(D) to make the vaccine much more effective than 10 years ago

(E) in making the vaccine much more effective than it was 10 years ago

MANHATTAN REVIEW OFFICIAL EXPLANATION:



The first thing you have to determine in this sentence is what is being compared. Time is being compared, as in today x is more effective than x was ten years ago. You are not comparing the vaccine to ten years ago. That eliminates choices A, B and D. Choice E has an unnecessary preposition, ‘in’. Choice C is the correct answer.
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