Sentence Correction

An international team of astronomers working at telescopes in the Canary islands and Spain has detected at least 18 huge gas spheres estimated to have 5 to 15 times the mass of Jupiter, the solar system's largest planet.


a) astronomers working at telescopes in the Canary islands and Spain has detected at least 18 huge gas spheres estimated to have 5 to 15 times the mass of Jupiter

b) astronomers working at telescopes in the Canary islands and Spain has detected at least 18 huge gas spheres estimated to be 5 to 15 times Jupiter's mass

c) astronomers is working at telescopes in the Canary islands and Spain, having detected at least 18 huge gas spheres that are estimated at 5 to 15 times the mass of Jupiter

d) astronomers, working at telescopes in the Canary islands and Spain, and has detected at least 18 huge gas spheres estimated at 5 to 15 times the mass of Jupiter

e) astronomers, working at telescopes in the Canary islands and Spain, has detected at least 18 huge gas spheres estimated to be 5 to 15 times Jupiter's mass


OA to follow.

I think it's A.

Fab wrote:I think it's A.

any specific reason or just a hunch!

IMO A

b) astronomers working at telescopes in the Canary islands and Spain has detected at least 18 huge gas spheres estimated to be 5 to 15 times Jupiter's mass

Jupiter's mass is not the largest planet. Plus to be is considered wordy in GMAT.

c) astronomers is working at telescopes in the Canary islands and Spain, having detected at least 18 huge gas spheres that are estimated at 5 to 15 times the mass of Jupiter

estimation is that the 18 huge gas spheres have 5 to 15 times the mass of Jupiter.
They are not 'at' 5 - 15 times the mass of Jupiter. Hence change in meaning---INCORRECT.

d) astronomers, working at telescopes in the Canary islands and Spain, and has detected at least 18 huge gas spheres estimated at 5 to 15 times the mass of Jupiter

'And' creates a sentence fragment. Plus we don't know what the verb 'has detected' refers to. Spain or the Team.

e) astronomers, working at telescopes in the Canary islands and Spain, has detected at least 18 huge gas spheres estimated to be 5 to 15 times Jupiter's mass.

Same as B

But in B and E, isn't Jupiter's mass incorrect

I mean what is the solar systems largest planet?

Jupiter right. But since there is no Jupiter mentioned the largest planet refers to Jupiter's mass. Which is incorrect.

Agree with Mals 24.

What's the OA?

mals24 wrote:But in B and E, isn't Jupiter's mass incorrect

I mean what is the solar systems largest planet?

Jupiter right. But since there is no Jupiter mentioned the largest planet refers to Jupiter's mass. Which is incorrect.

Guys agreed with youll.

the largest planet should modify Jupiter and not its mass

However, "Estimated" is a key word and its proper idiomatic usage cant be ignored..I eliminated it only for the lack of proper idiomatic usage and this idiom is right from OG ...A is my second best..

This cud be reason why PC might have put the question

I don't think 'estimated to be' fits in this context without rephrasing. For example: mass of new gas sphere is estimated to be 5 to 15 times the mass of Jupitor.

X is estimated to be Y times Z.

Just an explanation. I could be wrong.

So, A is best in the lot.

the solar system's largest planet this noun phrase should modify jupiter and not its mass

OA is A.

Idioms with estimated

Check the below link for more details. Even I was confused with Estimated to be and marked B.

https://www.xiaolai.net/ocd/results.php.

Thanks.

iamcste wrote:
Guys agreed with youll.

the largest planet should modify Jupiter and not its mass

However, "Estimated" is a key word and its proper idiomatic usage cant be ignored..I eliminated it only for the lack of proper idiomatic usage and this idiom is right from OG ...A is my second best..

This cud be reason why PC might have put the question

You are absolutely right!

@imcste

Sorry for replying late. But here it is. According to the OG, estimated shoud be followed by an infinitive and not a preposition. So estimated to have is fine.
Also as a rule of thumb, try to look for other bigger grammatical errors than idioms to pick an answer choice.
Plus I guess in this question, the author included 'estimated to be' as a trap.

@ parallel chase
Your links not working

mals24 wrote:@imcste

Sorry for replying late. But here it is. According to the OG, estimated shoud be followed by an infinitive and not a preposition. So estimated to have is fine.
Also as a rule of thumb, try to look for other bigger grammatical errors than idioms to pick an answer choice.
Plus I guess in this question, the author included 'estimated to be' as a trap.

@ parallel chase
Your links not working

You meant "must" right

Also, Pls check OG Qtn 21 and MG pg. 111

As per me in real exam, both options cannot co-exist..and hence i take this as one off beat exam and also I will put an extra verification point for check of meaning to be doubly sure...

I don't have the new MG SC Guide, can you please quote whats mentioned in the book

Btw the rule for the use of infinitive after estimated, I took it from Question 21 in OG SC. Now I'm not sure if this rule applies to that question in particular or is to be applied in general. I believe its a general rule estimated + infinitive.

You have a very sharp eyesight btw, I meant 'must' instead of should.