Carefully conceived by NASA to stimulate microgravity, a device called

Question

Carefully conceived by NASA to stimulate microgravity, a device called an acoustic levitator, which can suspend tiny balls of liquid, using two speakers that project sound waves in opposite directions and counteracting the force of gravity,  is now commercially available for use in industries and researches involving anti-gravity effects.

(A) Carefully conceived by NASA to stimulate microgravity, a device called an acoustic levitator, which can suspend tiny balls of liquid, using two speakers that project sound waves in opposite directions, and counteracting the force of gravity,

(B) Carefully conceived by NASA to stimulate microgravity, having the ability to suspend tiny balls of liquid using two speakers projecting sound waves in opposite directions, and counteracting the force of gravity, a device called an acoustic levitator

(C) A device carefully conceived by NASA for stimulating microgravity, called an acoustic levitator, which suspends tiny balls of liquid to use two speakers projecting sound waves in opposite directions and to counteract the force of gravity,

(D) A device carefully conceived by NASA to stimulate microgravity, called an acoustic levitator, can suspend tiny balls of liquid, using two speakers projecting sound waves in opposite directions and counteracting the force of gravity,

(E) A device that was carefully conceived by NASA for stimulating microgravity and that can suspend tiny balls of liquid, using two speakers projecting sound waves in opposite directions

PS: The reason for posting these topics by RSSing.com is that, since the OA and OE are not open to the public, we can hold wide discussions on these topics.

daagh · Accepted Answer

Carefully conceived by NASA to stimulate microgravity, a device called an acoustic levitator, which can suspend tiny balls of liquid, using two speakers that project sound waves in opposite directions and counteracting the force of gravity , is now commercially available for use in industries and researches involving anti-gravity effects.

A) Carefully conceived by NASA to stimulate microgravity, a device called an acoustic levitator, which can suspend tiny balls of liquid, using two speakers that project sound waves in opposite directions, and counteracting the force of gravity,---  Looks the best bet as I see it. 'counteracting' is parallel to 'using'

B) Carefully conceived by NASA to stimulate microgravity, having the ability to suspend tiny balls of liquid using two speakers projecting sound waves in opposite directions, and counteracting the force of gravity, a device called an acoustic levitator ---  having the ability' is poor diction compared to 'can'

C) A device carefully conceived by NASA for stimulating microgravity called an acoustic levitator, which suspends tiny balls of liquid to use two speakers projecting sound waves in opposite directions and to counteract the force of gravity,---- ' which suspends' is materially different from 'can suspend'.

D) A device carefully conceived by NASA to stimulate microgravity, called an acoustic levitator, can suspend tiny balls of liquid, using two speakers projecting sound waves in opposite directions and counteracting the force of gravity, --  read with the non underlined part, this a comma splice (run-on).

E) A device that was carefully conceived by NASA for stimulating microgravity and that can suspend tiny balls of liquid, using two speakers projecting sound waves in opposite directions---  incomplete, doesn't mention the levitator nor the counteracting.

In A, 'which' is not redundant. If you don't use 'which, the sentence will suffer from double verbing when read together with the nonunderlined part.

Makesh617 · Answer

A isnot correct.I think mod1 + subject + modifier2 , verb is fine. Bcz of parallelism error

D and B are correct interms of parallelism

nikithaiyer5 · Answer

A) Carefully conceived by NASA to stimulate microgravity, a device called an acoustic levitator, which can suspend tiny balls of liquid, using two speakers that project sound waves in opposite directions, and counteracting the force of gravity -  usage of which is redundant

B) Carefully conceived by NASA to stimulate microgravity, having the ability to suspend tiny balls of liquid using two speakers projecting sound waves in opposite directions, and counteracting the force of gravity, a device called an acoustic levitator -  Usage of "...,and counteracting..."---Having that ability leads to a counteracting effect, the usage of comma there offsets the clause and i felt, there are too many fragments of dependent clauses

C) A device carefully conceived by NASA for stimulating microgravity, called an acoustic levitator, which suspends tiny balls of liquid to use two speakers projecting sound waves in opposite directions and to counteract the force of gravity, -  "...suspends tiny balls of liquid to use speakers..." - changes the meaning

D) A device carefully conceived by NASA to stimulate microgravity, called an acoustic levitator, can suspend tiny balls of liquid, using two speakers projecting sound waves in opposite directions and counteracting the force of gravity,  i couldnt find any error in this

E) A device that was carefully conceived by NASA for stimulating microgravity and that can suspend tiny balls of liquid, using two speakers projecting sound waves in opposite directions -  not very sure, but i feel using the two bits of info -
 "that was carefully conceived" and "that can suspend" - being used with "and" in between doesnt seem right. Further, the clause "using two .." alters the meaning -- Device was conceived using two speakers -- device was conceived for a purpose(to suspend )

hmxiao · Answer

Was down to A or D. Crossed off A because the counteracting was just awkward - I think it was trying to do parallelism but failed.

B, C, E changed meanings

pclawong · Answer

I chose A.. The flow just sounds right to me.

gmat_India · Answer

A - Correct 
B - Modifier error 
C - Change of meaning 
D - Run on
E - Change of meaning

kumarparitosh123 · Answer

I personally had the same reasoning in my mind while solving this question.
So I ll also go for D.

Sent from my Lenovo TAB S8-50LC using  GMAT Club Forum mobile app

kunalsinghNS · Answer

I will also go for D !
but i was a bit diverted towards option C

pra1785 · Answer

I will go for D. It is parallel and the meaning is not altered.

Nitingupta1989 · Answer

D for me because of parallelism

Bounce1987 · Answer

Carefully conceived by NASA to stimulate microgravity, a device called an acoustic levitator, which can suspend tiny balls of liquid, using two speakers that project sound waves in opposite directions and counteracting the force of gravity,  is now commercially available for use in industries and researches involving anti-gravity effects.

A) Carefully conceived by NASA to stimulate microgravity, a device called an acoustic levitator, which can suspend tiny balls of liquid, using two speakers that project sound waves in opposite directions, and counteracting the force of gravity,( correct )

B) Carefully conceived by NASA to stimulate microgravity, having the ability to suspend tiny balls of liquid using two speakers projecting sound waves in opposite directions, and counteracting the force of gravity, a device called an acoustic levitator( parallelism and modifier error )

C) A device carefully conceived by NASA for stimulating microgravity, called an acoustic levitator, which suspends tiny balls of liquid to use two speakers projecting sound waves in opposite directions and to counteract the force of gravity,( meaning and modifier error )

D) A device carefully conceived by NASA to stimulate microgravity, called an acoustic levitator, can suspend tiny balls of liquid, using two speakers projecting sound waves in opposite directions and counteracting the force of gravity, ( a device.. can spend..is now commercially available ) Wrong

E) A device that was carefully conceived by NASA for stimulating microgravity and that can suspend tiny balls of liquid, using two speakers projecting sound waves in opposite directions ( for stimulating )Wrong

ShubhiTeotia · Answer

Carefully conceived by NASA to stimulate microgravity, a device called an acoustic levitator, which can suspend tiny balls of liquid, using two speakers that project sound waves in opposite directions and counteracting the force of gravity, is now commercially available for use in industries and researches involving anti-gravity effects.

A) Carefully conceived by NASA to stimulate microgravity, a device called an acoustic levitator, which can suspend tiny balls of liquid, using two speakers that project sound waves in opposite directions, and counteracting the force of gravity,

B) Carefully conceived by NASA to stimulate microgravity, having the ability to suspend tiny balls of liquid using two speakers projecting sound waves in opposite directions, and counteracting the force of gravity, a device called an acoustic levitator

C) A device carefully conceived by NASA for stimulating microgravity, called an acoustic levitator, which suspends tiny balls of liquid to use two speakers projecting sound waves in opposite directions and to counteract the force of gravity,

D) A device carefully conceived by NASA to stimulate microgravity, called an acoustic levitator, can suspend tiny balls of liquid, using two speakers projecting sound waves in opposite directions and counteracting the force of gravity,

E) A device that was carefully conceived by NASA for stimulating microgravity and that can suspend tiny balls of liquid, using two speakers projecting sound waves in opposite directions

mohshu · Answer

+A

the flow is just correct,,the usage of which is not redundant

nikithaiyer5 · Answer

In Option A, which is the independent clause?

How can we have a sentence without an independent clause ?

daagh · Answer

Nikitha

Carefully conceived by NASA to stimulate microgravity,  a device called an acoustic levitator, which can suspend tiny balls of liquid, using two speakers that project sound waves in opposite directions and counteracting the force of gravity,  is now commercially available for use in industries and researches involving anti-gravity effects.

Please read the entire sentence with the non-underlined part and the predicate will pop up. The choices per se are supposed to be substantive phrases that act as the singular subjects followed by the verb 'is'.

shekhu · Answer

daagh , can you explain how option D is a run on sentence?

I tried to remove the fluff in the complete sentence, it kinda looked okay to me.

A device carefully conceived by NASA to stimulate microgravity ,  called an acoustic levitator, can suspend tiny balls of liquid, using two speakers projecting sound waves in opposite directions and counteracting the force of gravity,   is now commercially available for use in industries and researches involving anti-gravity effects.

daagh · Answer

This is D In full. We will now remove the fluff by striking.off.

A device carefully conceived by NASA to simulate microgravity, called an acoustic levitator, can suspend tiny balls of liquid, using two speakers projecting sound waves in opposite directions and counteracting the force of gravity,  is now commercially available for use in industries and researches involving anti-gravity effects.

A device carefully conceived by NASA to simulate microgravity,  called an acoustic levitator , can suspend tiny balls of liquid,  using two speakers projecting sound waves in opposite directions and counteracting the force of gravity, is now commercially available for use in industries and researches involving anti-gravity effects.

D) A device carefully conceived by NASA to stimulate microgravity, --- The only subject, a noun phrase. 
Can suspend -- the first verb
Is now commercially available -- the second verb
We can see that there is only a comma that splices or one can argue there is not even a comma that joins the two said verbs, in which case, it will be a fused sentence. We can technically take that all the comma present there e part of the modifiers.

shekhu · Answer

Thanks a lot! Just to understand, a conjunction such as "and" before "is now commercially available" would make it correct, right?

saurabh9gupta · Answer

Is this question from the official guide?

Carefully conceived by NASA to stimulate microgravity, a device called

Prep Toolkit

Top 5 GMAT Debrief Videos

615 to 715 in 15 Days (Ria's Strategies)

More than Quant/Verbal Abilities: Speed vs. Accuracy

745 with Only Self-Prep and GMAT Club

From 555 to 765: 210-point Improvement

Perfect 805 Score Debrief by Julia

My Rewards

GMAT Sentence Correction (SC - EA only) Questions

Carefully conceived by NASA to stimulate microgravity, a device called

Prep Toolkit

615 to 715 in 15 Days (Ria's Strategies)

More than Quant/Verbal Abilities: Speed vs. Accuracy

745 with Only Self-Prep and GMAT Club

From 555 to 765: 210-point Improvement

Perfect 805 Score Debrief by Julia

My Rewards