OFFICIAL EXPLANATION



THE PROMPT


• In this sentence, we can logically compare adolescents with people of other age groups.
→ That is, make sure that you are comparing apples to apples.
In the nonunderlined portion, we read about adolescents [who] require nine hours of sleep.
Adolescents = both a group of people and a group of people of a certain age.
The object of comparison must also be a group of people in a different age group.

THE OPTIONS


• comparison error
→ This sentence illogically compares adolescents with other age groups.
Adolescents are people, not age categories.
ELIMINATE A


• correct
• This sentence logically compares adolescents with people of other ages.
• The word more refers to sleep.
In fact, sleep is implied, this way: " . . . more [sleep] than people of other ages require."
KEEP


• comparison error
→ The word those refers back to adolescents.
This sentence thus illogically compares adolescents with adolescents of (those of) other ages. Huh?
ELIMINATE C

• comparison error
→ This sentence illogically compares adolescents with the requirement of other ages.
Even if we are very generous and allow the requirement to mean "number of hours of sleep," we are still improperly comparing adolescents with requirements— with needs. Adolescents are people, not needs.
ELIMINATE D

• comparison error
→ This sentence illogically compares adolescents with other ages.
Adolescents are people who fall in a certain age range, but they are not themselves ages.
ELIMINATE E

The correct answer is B.


COMMENTS

NawalDwivedi and richi1234 , welcome to SC Butler.

These answers are clear, crisply written, and easy to follow.
Nice work!

A) more than other ages require
Looks good

B) Requirement of sleep is compared with People -Illogical

C) What is "those" ? Not very clear -Eliminate

D) -Looks good. Let us keep

E) Not very clear: Requirement is compared with other ages-Eliminate

B/W A and D, I will pick A as A includes verb to explicitly indicate comparison of actions.
In D Underlined portion compares noun i.e requirement with action

(A) is my pick

IMO D

According to a recent study, adolescents require nine hours of sleep every night, more than other ages require.

A) more than other ages require - Need to compare a class of people - Adolescents to another class

B) more than people of other ages require - cannot compare sleep with people.

C) more than those of other ages do - Those has no logically antecedent which creates distortion in meaning.

D) more than the requirement of other ages - Keeps the meaning and is more clear- X requires 9 hrs of sleep every night which is more than the requirement of other ages.

E) more than other ages - Requirement is compared with ages.

"Ages" don't require sleep; people do. Most answers compare how much sleep adolescents need with the amount of sleep other ages need, which doesn't make sense. Only answer B compares the sleep required by people of adolescent age with the sleep required by people of other ages. Posts above mine suggest sleep and people are compared in B, but that's not what's happening -- B should be read to say:

adolescents require nine hours of sleep every night, more {sleep} than people of other ages require.

I suppose you could read C to make the right comparison too, but "those" in C is ambiguous, so B is better.
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According to a recent study, adolescents require nine hours of sleep every night, more than other ages require.

A) more than other ages require -> adolescents should be compared with people, not with the other ages. Incorrect.

B) more than people of other ages require -> Here comparison is better. As we are comparing "adolescents" with "people of other ages". Let's keep it.

C) more than those of other ages do -> those of refers to "adolescents" then we have "adolescents of other ages"....It doesn't make sense. Incorrect.

D) more than the requirement of other ages -> "adolescents" are compared to "requirement of other ages"...Incorrect.

E) more than other ages -> Same error of comparison. Incorrect.

So, I think B.

According to a recent study, adolescents require nine hours of sleep every night, more than other ages require.

A) more than other ages require - ages don't require sleep, people do. Incorrect

B) more than people of other ages require - Correct: Comparison is right

C) more than those of other ages do - replace those with adolescents. Does not make sense. Incorrect.

D) more than the requirement of other ages - Wrong comparison and ages do not require sleep (meaning) Incorrect

E) more than other ages - Meaning and comparison issue. Incorrect

According to a recent study, adolescents require nine hours of sleep every night, more than other ages require.


A) more than other ages require---> wrong comparison. Adolescents is a group and cannot be compared to other ages.

B) more than people of other ages require-----> Correct !! require could be replaced with do. But this option by far is the best.

C) more than those of other ages do------> Wrong comparison and meaning error. adolescents are compared with those of other ages. Those creates ambiguity. Does those means adolescents of other ages. That completely changes the meaning my creates a senseless sentence.

D) more than the requirement of other ages-----> Wrong comparison. Adolescents and requirement are wrongly compared.

E) more than other ages------>Wrong comparison. Adolescents and other ages are wrongly compared.

According to a recent study, adolescents require nine hours of sleep every night, more than other ages require.

Intended Meaning: Comparing the adolescent with People of other ages
Error Analysis:
1. Incorrect meaning: As per sentence comparing adolescent with other ages and not people of other ages
- other ages is a number can not be compared with adolescent

A) more than other ages require
- Comparison error as highlighted above

B) more than people of other ages require
- Correctly comparing the people of other ages with adolescents

C) more than those of other ages do
- Pronoun antecedent error
- No logical reference for THOSE

D) more than the requirement of other ages
- Convoluted
- Also incorrect comparison

E) more than other ages
- Incorrect comparison as highlighted above

The official explanation is here.
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