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Sub 505 Level|   Parallelism|   Parallelism|                        
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A. It stood twelve feet tall, weighed nine thousand pounds, and wielded seven-inch claws, and Megatherium americanum, a giant ground sloth, - Incorrect - Awkward

B. It stood twelve feet tall, weighing nine thousand pounds, and wielding seven-inch claws, Megatherium americanum was a giant ground sloth and - Incorrect - Awkward

C. The giant ground sloth Megatherium americanum, having stood twelve feet tall, weighing nine thousand pounds, and wielding seven-inch claws, it - Incorrect - Awkward

D. Standing twelve feet tall, weighing nine thousand pounds, and wielding seven-inch claws, Megatherium americanum, a giant ground sloth, - Correct - There are no modifier or parallelism errors and the sentence conveys the intended meaning without any ambiguity.

E. Standing twelve feet tall, weighing nine thousand pounds, it wielded seven-inch claws, and the giant ground sloth Megatherium americanum - Incorrect - Awkward

Answer: D
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It stood twelve feet tall, weighed nine thousand pounds, and wielded seven-inch claws, and Megatherium americanum, a giant ground sloth, may have been the largest hunting mammal ever to walk the Earth.

A. It stood twelve feet tall, weighed nine thousand pounds, and wielded seven-inch claws, and Megatherium americanum, a giant ground sloth, --- the construction should normally have the it after the sloth however the usage of and is the major factor
B. It stood twelve feet tall, weighing nine thousand pounds, and wielding seven-inch claws, Megatherium americanum was a giant ground sloth and ----awkward construction again
C. The giant ground sloth Megatherium americanum, having stood twelve feet tall, weighing nine thousand pounds, and wielding seven-inch claws, it -----incorrect usage of having
D. Standing twelve feet tall, weighing nine thousand pounds, and wielding seven-inch claws, Megatherium americanum, a giant ground sloth, ----weighing,and wielding parallel and no modifier issue ---best of the lot !!
E. Standing twelve feet tall, weighing nine thousand pounds, it wielded seven-inch claws, and the giant ground sloth Megatherium americanum



D is the best of the lot and should be the answer !!
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It stood twelve feet tall, weighed nine thousand pounds, and wielded seven-inch claws, and Megatherium americanum, a giant ground sloth, may have been the largest hunting mammal ever to walk the Earth.

A. It stood twelve feet tall, weighed nine thousand pounds, and wielded seven-inch claws, and Megatherium americanum, a giant ground sloth,
B. It stood twelve feet tall, weighing nine thousand pounds, and wielding seven-inch claws, Megatherium americanum was a giant ground sloth and
C. The giant ground sloth Megatherium americanum, having stood twelve feet tall, weighing nine thousand pounds, and wielding seven-inch claws, it
D. Standing twelve feet tall, weighing nine thousand pounds, and wielding seven-inch claws, Megatherium americanum, a giant ground sloth,
E. Standing twelve feet tall, weighing nine thousand pounds, it wielded seven-inch claws, and the giant ground sloth Megatherium americanum

Answer - D

A - Usage of and is wrong
B - Usage of was
C - No verb for the first part of sentence.
E - Awkward
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It stood twelve feet tall, weighed nine thousand pounds, and wielded seven-inch claws, and Megatherium americanum, a giant ground sloth, may have been the largest hunting mammal ever to walk the Earth.

A. It stood twelve feet tall, weighed nine thousand pounds, and wielded seven-inch claws, and Megatherium americanum, a giant ground sloth,
B. It stood twelve feet tall, weighing nine thousand pounds, and wielding seven-inch claws, Megatherium americanum was a giant ground sloth and
C. The giant ground sloth Megatherium americanum, having stood twelve feet tall, weighing nine thousand pounds, and wielding seven-inch claws, it
D. Standing twelve feet tall, weighing nine thousand pounds, and wielding seven-inch claws, Megatherium americanum, a giant ground sloth,
E. Standing twelve feet tall, weighing nine thousand pounds, it wielded seven-inch claws, and the giant ground sloth Megatherium americanum


Standing twelve feet tall, weighing nine thousand pounds, and wielding seven-inch claws, Megatherium americanum, a giant ground sloth, may have been the largest hunting mammal ever to walk the Earth.


Standing twelve feet tall, weighing nine thousand pounds, and wielding seven-inch claws, Megatherium americanum, a giant ground sloth, may have been the largest hunting mammal ever to walk the Earth.

Correct answer must be (D)
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A question regarding the usage of "and"
    - in parallel elements of a list
    - as a conjunction

X, Y and Z -> parallel elements in a list connected by "and"
X, Y, and Z -> Z is a clause connected by the conjunction"and"

If my understanding (above) is correct, can someone explain how parallelism is maintained in this question with ", and" structure in all the below answer choices?

A. It stood twelve feet tall, weighed nine thousand pounds, and wielded seven-inch claws, and Megatherium americanum, a giant ground sloth,
B. It stood twelve feet tall, weighing nine thousand pounds, and wielding seven-inch claws, Megatherium americanum was a giant ground sloth and
C. The giant ground sloth Megatherium americanum, having stood twelve feet tall, weighing nine thousand pounds, and wielding seven-inch claws, it
D. Standing twelve feet tall, weighing nine thousand pounds, and wielding seven-inch claws, Megatherium americanum, a giant ground sloth,

P.S. Please ignore the differences in weilded/weilding, stood/standing, weighed/weighing for now

Edit: added link to forum where a similar question is posted
https://gmatclub.com/forum/gmat-grammar-book-coordinating-conjunctions-part-i-97274.html

Thanks
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It stood twelve feet tall, weighed nine thousand pounds, and wielded seven-inch claws, and Megatherium americanum, a giant ground sloth, may have been the largest hunting mammal ever to walk the Earth.

A. It stood twelve feet tall, weighed nine thousand pounds, and wielded seven-inch claws, and Megatherium americanum, a giant ground sloth, - Incorrect meaning - usage of and
B. It stood twelve feet tall, weighing nine thousand pounds, and wielding seven-inch claws, Megatherium americanum was a giant ground sloth and - Run on sentence
C. The giant ground sloth Megatherium americanum, having stood twelve feet tall, weighing nine thousand pounds, and wielding seven-inch claws, it - Not a sentence
D. Standing twelve feet tall, weighing nine thousand pounds, and wielding seven-inch claws, Megatherium americanum, a giant ground sloth, - Correct
E. Standing twelve feet tall, weighing nine thousand pounds, it wielded seven-inch claws, and the giant ground sloth Megatherium americanum - Incorrect - usage of and is improper here . Also "it "violates parallelism

Answer D
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It stood twelve feet tall, weighed nine thousand pounds, and wielded seven-inch claws, and Megatherium americanum, a giant ground sloth, may have been the largest hunting mammal ever to walk the Earth.

Issues: Modifier

Analysis:
- The main subject of the sentence is Megatherium americanum
- The core of the sentence is "... Megatherium americanum may have been the largest hunting mammal ever ..."
- Hence, we need to use verb-ing for the verbs (stand, weigh and wield) to correctly modify the main subject

A. It stood twelve feet tall, weighed nine thousand pounds, and wielded seven-inch claws, and Megatherium americanum, a giant ground sloth,
- Incorrect usage of "and"

B. It stood twelve feet tall, weighing nine thousand pounds, and wielding seven-inch claws, Megatherium americanum was a giant ground sloth and
- Run sentence (comma splice)

C. The giant ground sloth Megatherium americanum, having stood twelve feet tall, weighing nine thousand pounds, and wielding seven-inch claws, it
- Fragment
- Run on sentence

D. Standing twelve feet tall, weighing nine thousand pounds, and wielding seven-inch claws, Megatherium americanum, a giant ground sloth,
- Has the correct structure: Standing.., weighing.. and weilding..., MA may have been ....

E. Standing twelve feet tall, weighing nine thousand pounds, it wielded seven-inch claws, and the giant ground sloth Megatherium americanum
- Incorrect usage of "and"
- Parallelism issues
- (not sure about this one) it seems like "giant ground sloth Megatherium americanum" is missing either punctuation or a word. A better way to write it would be:
--- giant ground sloth, Megatherium americanum, ...
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hi,

why is option A wrong and option D correct?

request to explain

thanks
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hi,

why is option A wrong and option D correct?

request to explain

thanks


A is wrong because the double use of "and"

It stood twelve feet tall, weighed nine thousand pounds, and wielded seven-inch claws, and Megatherium americanum, a giant ground sloth
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In addition to the redundant use of "and", choice A is also incorrect for beginning with the ambiguous pronoun "it" which could refer to either "Megatherium americanum" or "a giant ground sloth". Thus, the sentence would not correctly indicate that the two items are one and the same in the way that choice D does.
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A. It stood twelve feet tall, weighed nine thousand pounds, and wielded seven-inch claws, and(this is placed in a wrong spot) Megatherium americanum, a giant ground sloth,
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Ashokshiva
hi,

why is option A wrong and option D correct?

request to explain

thanks


A is wrong because the double use of "and"

It stood twelve feet tall, weighed nine thousand pounds, and wielded seven-inch claws, and Megatherium americanum, a giant ground sloth

if a semicolon is used instead of the second "and" to connect the two IC would the option be correct?
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anox
It stood twelve feet tall, weighed nine thousand pounds, and wielded seven-inch claws, and Megatherium americanum, a giant ground sloth, may have been the largest hunting mammal ever to walk the Earth.

Issues: Modifier

Analysis:
- The main subject of the sentence is Megatherium americanum
- The core of the sentence is "... Megatherium americanum may have been the largest hunting mammal ever ..."
- Hence, we need to use verb-ing for the verbs (stand, weigh and wield) to correctly modify the main subject

A. It stood twelve feet tall, weighed nine thousand pounds, and wielded seven-inch claws, and Megatherium americanum, a giant ground sloth,
- Incorrect usage of "and"

B. It stood twelve feet tall, weighing nine thousand pounds, and wielding seven-inch claws, Megatherium americanum was a giant ground sloth and
- Run sentence (comma splice)

C. The giant ground sloth Megatherium americanum, having stood twelve feet tall, weighing nine thousand pounds, and wielding seven-inch claws, it
- Fragment
- Run on sentence

D. Standing twelve feet tall, weighing nine thousand pounds, and wielding seven-inch claws, Megatherium americanum, a giant ground sloth,
- Has the correct structure: Standing.., weighing.. and weilding..., MA may have been ....

E. Standing twelve feet tall, weighing nine thousand pounds, it wielded seven-inch claws, and the giant ground sloth Megatherium americanum
- Incorrect usage of "and"
- Parallelism issues
- (not sure about this one) it seems like "giant ground sloth Megatherium americanum" is missing either punctuation or a word. A better way to write it would be:
--- giant ground sloth, Megatherium americanum, ...


whether GMAT prefers the placeholder IT structure.in this example can i reject option A and B just ON THE BASIS OF PLACEHOLDER IT structure?
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GMATNinja
Ashokshiva
if a semicolon is used instead of the second "and" to connect the two IC would the option be correct?

If you replaced the comma + "and" in (A) with a semicolon, you'd have the following:

    It stood twelve feet tall, weighed nine thousand pounds, and wielded seven-inch claws; Megatherium americanum, a giant ground sloth, may have been the largest hunting mammal ever to walk the Earth.

In terms of the semicolon use, sure -- it would be completely fine, as long as there are two independent clauses separated by that semicolon. But I'm not sure why we would choose to write it this way. All of the characteristics in the first clause modify the giant ground sloth, so we're much better off with (D), because all of those characteristics are structured as modifiers. In the modified version of (A) with a semicolon, it seems like we're just telling two separate stories about this animal, and that doesn't make quite as much sense.

I hope this helps!

whether GMAT prefers the placeholder IT structure.in this QUESTION, can i reject option A and B just ON THE BASIS OF PLACEHOLDER IT structure?
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anox
It stood twelve feet tall, weighed nine thousand pounds, and wielded seven-inch claws, and Megatherium americanum, a giant ground sloth, may have been the largest hunting mammal ever to walk the Earth.

Issues: Modifier

Analysis:
- The main subject of the sentence is Megatherium americanum
- The core of the sentence is "... Megatherium americanum may have been the largest hunting mammal ever ..."
- Hence, we need to use verb-ing for the verbs (stand, weigh and wield) to correctly modify the main subject

A. It stood twelve feet tall, weighed nine thousand pounds, and wielded seven-inch claws, and Megatherium americanum, a giant ground sloth,
- Incorrect usage of "and"

B. It stood twelve feet tall, weighing nine thousand pounds, and wielding seven-inch claws, Megatherium americanum was a giant ground sloth and
- Run sentence (comma splice)

C. The giant ground sloth Megatherium americanum, having stood twelve feet tall, weighing nine thousand pounds, and wielding seven-inch claws, it
- Fragment
- Run on sentence

D. Standing twelve feet tall, weighing nine thousand pounds, and wielding seven-inch claws, Megatherium americanum, a giant ground sloth,
- Has the correct structure: Standing.., weighing.. and weilding..., MA may have been ....

E. Standing twelve feet tall, weighing nine thousand pounds, it wielded seven-inch claws, and the giant ground sloth Megatherium americanum
- Incorrect usage of "and"
- Parallelism issues
- (not sure about this one) it seems like "giant ground sloth Megatherium americanum" is missing either punctuation or a word. A better way to write it would be:
--- giant ground sloth, Megatherium americanum, ...


whether GMAT prefers the placeholder IT structure.in this example can i reject option A and B just ON THE BASIS OF PLACEHOLDER IT structure?

The pronoun 'it' used in option A and B is not a placeholder.
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As the subject is singular, how come the sentence ends with "may have been the largest hunting mammal ever to walk the Earth "
Shouldnt it be "may has been...." ?
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As the subject is singular, how come the sentence ends with "may have been the largest hunting mammal ever to walk the Earth "
Shouldnt it be "may has been...." ?
The word "may" is actually functioning as a verb in this sentence (a "modal verb," if you like grammar jargon). When you use "may," you follow it with the infinitive form of a verb, but without the "to."

For example, "to regret" is the infinitive form of a verb. This sentence uses "may" and "to regret" without the "to":

  • I may regret calling my boss a ding-dong.

The form of "regret" doesn't change at all, even if the subject of the sentence changes:

  • He may regret eating all five burritos.
  • We may regret wearing socks and sandals.

"To have" is the infinitive form used in the official question. So, it's correct to say that "Megatherium americanum[...] may have been the largest hunting mammal ever to walk the Earth," even though the subject is singular.

I hope that helps!
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