Once positioned in space, the Hubble Space Telescope will capture ligh

Question

Once positioned in space, the Hubble Space Telescope will capture light from sources twenty times fainter  compared to those that can be detected  by ground-based instruments.

(A) compared to those that can b detected
(B) compared to those they can detect
(C) than that can be detected
(D) than those that can be detected
(E) than those detecting

AkamaiBrah · Accepted Answer

IMO, D is correct. 

"Fainter than" is the correct idiom. We are comparing sources to other sources. Which sources? Those (sources) that can be detected by ground based intruments.

pitts20042006 · Answer

I vote for D too.

"fainter" already implies there is a comparison ... also as written above "fainter than" is correct.

SudiptoGmat · Answer

twenty times fainter - mean we need a than so A and B out.

now by ground-based instruments means we need passive voice in the underline area. So E out.

Now comparison is between two type of sources. So "than those" is meaningful. Undoubtedly D is the answer.

seekmba · Answer

D it is.

We are comparing "sources"

"Hubble telescope will capture light from SOURCES 20 times fainter than those   that can be dectected by ground based instruments."

raiprem123 · Answer

IMO..... D is the correct option. Fainter already shows that there is comparison between things.. fainter than seems good to me.. My answer D

alwaysnewbie · Answer

When using a comparative adjective ("-er") "than" is required, so "compared to" is wrong.
Answer (A) & (B) are wrong

We need to be clear on what is/are being compared.
There are two nouns in this question that are eligible for comparison, light (that) and sources (those)
For which noun can we use the comparative adjective "fainter"? 
Though, 
 "Fainter" makes more sense with light, 
and the verb detected is more appropriate for "light" than "sources" 
Answer choice (C) is wrong. Why? Answer choice (C) is missing subject for the "can be detected...." phrase.

(C) The Hubble Space Telescope will capture  light  from sources twenty times  fainter   than  that    can be detected  by ground-based instruments.
(C) The Hubble Space Telescope will capture  light  from sources twenty times  fainter   than  that     that    can be detected  by ground-based instruments.

(D) The Hubble Space Telescope will capture light from  sources  twenty times  fainter   than  those    that   can be detected  detected by ground-based instruments.

Correct answer (D)

Thanks

devikeerthansr · Answer

We are comparing "sources" not light here.

"Hubble telescope will capture light from sources 20 times fainter than those   that can be detected by ground based instruments." 
D is correct. Good question

VerbalBot · Answer

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Once positioned in space, the Hubble Space Telescope will capture ligh

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Once positioned in space, the Hubble Space Telescope will capture ligh

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