Last visit was: 29 Apr 2026, 06:57 It is currently 29 Apr 2026, 06:57
Close
GMAT Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Close
Request Expert Reply
Confirm Cancel
User avatar
Bunuel
User avatar
Math Expert
Joined: 02 Sep 2009
Last visit: 29 Apr 2026
Posts: 109,970
Own Kudos:
811,909
 [9]
Given Kudos: 105,948
Products:
Expert
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 109,970
Kudos: 811,909
 [9]
Kudos
Add Kudos
9
Bookmarks
Bookmark this Post
avatar
piyush0122
Joined: 20 Aug 2017
Last visit: 17 Apr 2026
Posts: 40
Own Kudos:
169
 [2]
Given Kudos: 192
GMAT 1: 700 Q48 V37 (Online)
GPA: 4
GMAT 1: 700 Q48 V37 (Online)
Posts: 40
Kudos: 169
 [2]
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
User avatar
cathygeorge123
Joined: 28 May 2014
Last visit: 14 Apr 2022
Posts: 61
Own Kudos:
70
 [1]
Given Kudos: 164
Location: Singapore
Concentration: Strategy
GMAT 1: 590 Q44 V27
Products:
GMAT 1: 590 Q44 V27
Posts: 61
Kudos: 70
 [1]
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
User avatar
Aviral1995
User avatar
Current Student
Joined: 13 Apr 2019
Last visit: 23 May 2022
Posts: 228
Own Kudos:
69
 [1]
Given Kudos: 309
Location: India
GMAT 1: 710 Q49 V36
GPA: 3.85
Products:
GMAT 1: 710 Q49 V36
Posts: 228
Kudos: 69
 [1]
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Drug therapy can supplement, but it does not replace psychotherapy as they treat a disease which has psychological and physiological components.
A,B ,and C are out as they wrongly refers to singular 'Drug therapy'
In E, a new sentence starts without completing the sentence Drug therapy can supplement

Answer-D


A. supplement, but it does not replace psychotherapy as they treat a disease which has

B. supplement, but they do not replace psychotherapy in the treating of a disease having

C. supplement but does not replace psychotherapy as they treat a disease having

D. supplement but not replace psychotherapy in the treatment of a disease that has

E. supplement, but there is no replacement for psychotherapy in the treatment of a disease that has
User avatar
NitishJain
User avatar
IESE School Moderator
Joined: 11 Feb 2019
Last visit: 05 Jan 2025
Posts: 266
Own Kudos:
204
 [1]
Given Kudos: 53
Posts: 266
Kudos: 204
 [1]
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
D
"comma + but" connects two independent clauses
Drug therapy can supplement ...... seems incomplete.

A, B, E gone
C; pronoun "they" is ambiguous.
User avatar
NiftyNiffler
User avatar
McCombs School Moderator
Joined: 26 May 2019
Last visit: 15 Aug 2021
Posts: 324
Own Kudos:
380
 [1]
Given Kudos: 151
Location: India
GMAT 1: 690 Q50 V33
Products:
GMAT 1: 690 Q50 V33
Posts: 324
Kudos: 380
 [1]
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Drug therapy can supplement, but it does not replace psychotherapy as they treat a disease which has psychological and physiological components.


A. supplement, but it does not replace psychotherapy as they treat a disease which has -- pronouns are all over the place; "it" & "they" refer to nothing in particular unambiguously

B. supplement, but they do not replace psychotherapy in the treating of a disease having -- before "But", the first independent clause is not an independent thought (supplement what?)

C. supplement but does not replace psychotherapy as they treat a disease having -- "they" has ambiguous referent (can refer to both drug therapy and psychotherapy)

D. supplement but not replace psychotherapy in the treatment of a disease that has -- CORRECT, "but" is used as conjunction with common subject noun and object noun. Pesky pronouns are gone

E. supplement, but there is no replacement for psychotherapy in the treatment of a disease that has -- same as B and modifier error

So, answer is D
User avatar
stne
Joined: 27 May 2012
Last visit: 28 Apr 2026
Posts: 1,811
Own Kudos:
2,094
 [1]
Given Kudos: 681
Posts: 1,811
Kudos: 2,094
 [1]
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Bunuel
Drug therapy can supplement, but it does not replace psychotherapy as they treat a disease which has psychological and physiological components.


A. supplement, but it does not replace psychotherapy as they treat a disease which has

B. supplement, but they do not replace psychotherapy in the treating of a disease having

C. supplement but does not replace psychotherapy as they treat a disease having

D. supplement but not replace psychotherapy in the treatment of a disease that has

E. supplement, but there is no replacement for psychotherapy in the treatment of a disease that has



SC16552

Pronoun

A. supplement, but it does not replace psychotherapy as they treat a disease which has: "It" cannot refer to the whole clause " Drug therapy can supplement ", The clause can be referred to by "a practise " or " a method " etc. Additionally " they" has no referent. INCORRECT.

B. supplement, but they do not replace psychotherapy in the treating of a disease having: Pronoun " they" has no referent. INCORRECT.

C. supplement but does not replace psychotherapy as they treat a disease having.Pronoun " they" has no referent. INCORRECT.

D. supplement but not replace psychotherapy in the treatment of a disease that has: CORRECT.

E.supplement, but there is no replacement for psychotherapy in the treatment of a disease that has: Wordy, not as concise as option D.INCORRECT.

Ans- D

Hope it's clear.
avatar
vipulshahi
Joined: 24 Sep 2013
Last visit: 30 Aug 2021
Posts: 163
Own Kudos:
Given Kudos: 40
Location: Saudi Arabia
GPA: 3.8
WE:Project Management (Energy)
Posts: 163
Kudos: 113
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Drug therapy can supplement, but it does not replace psychotherapy as they treat a disease which has psychological and physiological components.

In above question, all Subject Verb Pair exist, Present tense used in tense , but pronoun error is there.
Modifier, Parallelism , Comparison , Idiomatic Usage all are seem correct.

A. supplement, but it does not replace psychotherapy as they treat a disease which has

1. There is ambiguity in the antecedent of "it" weather it belongs to "Drug therapy" & " supplement".
2. Pronoun error "they" refer to singular antecedent

- Incorrect

B. supplement, but they do not replace psychotherapy in the treating of a disease having

1. Pronoun error , "they" refer to whom?
2. Incorrect tense usage " do not"

- Incorrect

C. supplement but does not replace psychotherapy as they treat a disease having

1. "they" Pronoun error.

- Incorrect


D. supplement but not replace psychotherapy in the treatment of a disease that has

- It removes the pronoun ambiguity and usages the correct tense

- Correct

E. supplement, but there is no replacement for psychotherapy in the treatment of a disease that has

- Changes the meaning of the sentences & too wordy.

- Incorrect

IMO(D)
User avatar
abhishekdadarwal2009
Joined: 04 Sep 2015
Last visit: 07 Dec 2022
Posts: 524
Own Kudos:
Given Kudos: 123
Location: India
WE:Information Technology (Computer Software)
Products:
Posts: 524
Kudos: 487
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Bunuel
Drug therapy can supplement, but it does not replace psychotherapy as they treat a disease which has psychological and physiological components.

SC16552

IMO D

A. supplement, but it does not replace psychotherapy as they treat a disease which has
'they' is not clear. referring to singular object

B. supplement, but they do not replace psychotherapy in the treating of a disease having
'they' is not clear. referring to singular object

C. supplement but does not replace psychotherapy as they treat a disease having
'they' is wrong again.

D. supplement but not replace psychotherapy in the treatment of a disease that has
Correct meaning, clear grammer.

E. supplement, but there is no replacement for psychotherapy in the treatment of a disease that has
complicats the intended meaning.
avatar
bratbg
Joined: 27 Mar 2019
Last visit: 19 Dec 2022
Posts: 71
Own Kudos:
Given Kudos: 225
Location: India
GMAT 1: 650 Q48 V32
GMAT 2: 680 Q49 V34
GPA: 3
GMAT 2: 680 Q49 V34
Posts: 71
Kudos: 20
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Bunuel
Drug therapy can supplement, but it does not replace psychotherapy as they treat a disease which has psychological and physiological components.


A. supplement, but it does not replace psychotherapy as they treat a disease which has

B. supplement, but they do not replace psychotherapy in the treating of a disease having

C. supplement but does not replace psychotherapy as they treat a disease having

D. supplement but not replace psychotherapy in the treatment of a disease that has

E. supplement, but there is no replacement for psychotherapy in the treatment of a disease that has



SC16552


Hello Bunuel

WHat is the official explanation of this answer?
Isn't 'BUT' used wrongly here?

FANBOYS stands for the coordinating conjunctions For, And, Nor, But, Or, Yet, and So. We use these words to connect other words, phrases, and clauses together. When you see one of these connecting words and there are two complete thoughts in the sentence, you should always insert a comma before FANBOYS.

Please help in clarifying my doubt.
Thanks in advance

egmat CrackVerbal gmatwhiz AjiteshArun generis GMATNinja
User avatar
AjiteshArun
User avatar
Major Poster
Joined: 15 Jul 2015
Last visit: 27 Apr 2026
Posts: 6,079
Own Kudos:
Given Kudos: 744
Location: India
GMAT Focus 1: 715 Q83 V90 DI83
GMAT 1: 780 Q50 V51
GRE 1: Q170 V169
Expert
Expert reply
GMAT Focus 1: 715 Q83 V90 DI83
GMAT 1: 780 Q50 V51
GRE 1: Q170 V169
Posts: 6,079
Kudos: 5,140
Kudos
Add Kudos
Bookmarks
Bookmark this Post
bratbg
Hello Bunuel

WHat is the official explanation of this answer?
Isn't 'BUT' used wrongly here?

FANBOYS stands for the coordinating conjunctions For, And, Nor, But, Or, Yet, and So. We use these words to connect other words, phrases, and clauses together. When you see one of these connecting words and there are two complete thoughts in the sentence, you should always insert a comma before FANBOYS.

Please help in clarifying my doubt.
Thanks in advance

egmat CrackVerbal gmatwhiz AjiteshArun generis GMATNinja
Hi bratbg,

The correct option does not use but between two complete thoughts (most of the words are "understood"):
Drug therapy can supplement but not replace...

Even in option A, the portion on the left is not complete. That is, we cannot stop at supplement. We must include psychotherapy:
Drug therapy can supplement, but it does not replace psychotherapy... ← "drug therapy can supplement" is not complete on its own.

Also, there is no reason to apply the "rule" you mentioned. People may have (very) strong opinions on how commas should be used, but I think we should treat only a few select comma "rules" as rules (for example, the GMAT would almost certainly consider a comma splice an error).
User avatar
ChiranjeevSingh
Joined: 22 Oct 2012
Last visit: 29 Apr 2026
Posts: 427
Own Kudos:
Given Kudos: 161
Status:Private GMAT Tutor
Location: India
Concentration: Economics, Finance
Schools: IIMA  (A)
GMAT Focus 1: 735 Q90 V85 DI85
GMAT Focus 2: 735 Q90 V85 DI85
GMAT Focus 3: 735 Q88 V87 DI84
GMAT 1: 780 Q51 V47
GRE 1: Q170 V168
Expert
Expert reply
Schools: IIMA  (A)
GMAT Focus 3: 735 Q88 V87 DI84
GMAT 1: 780 Q51 V47
GRE 1: Q170 V168
Posts: 427
Kudos: 3,211
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Here's the official explanation provided by the GMAC for this question:

In the original version of this sentence, the opening phrase, Drug therapy can supplement is followed by an independent clause, it does not replace psychotherapy ... leaves supplement with no object. The sentence could be made grammatical and coherent by changing Drug therapy can supplement to Drug therapy can supplement psychotherapy. However, there are ways to make the sentence more concise by avoiding the awkward repetition of psychotherapy as answer choice D does.

Option A: This mistakenly treats supplements as an intransitive verb, claiming that drug therapy can supplement but not mentioning anything that it supplements. Thus, it is ungrammatical. The referent of they is not entirely clear. The intended significance of as is also unclear; it could mean while or because, but neither meaning would be entirely coherent.

Option B: Like answer choice A, this mistakenly treats supplement as an intransitive verb. Furthermore, the referent of the plural pronoun they is unclear; it has no plural antecedent within the sentence. In the treating of a disease is awkward and indirect.

Option C: This structure makes the referent of they unclear. The intended significance of as is also unclear; it could mean while or because, but neither meaning would be entirely coherent in this context.

Option D: Correct. This is grammatically correct and expresses a coherent meaning. It does so concisely by putting both supplement and not replace within the scope of the single auxiliary verb can.

Option E: Like answer choice A, this mistakenly treats supplement as an intransitive verb.The intended connection between the two clauses is unclear.

The correct answer is D.

Please note that I'm not the author of this explanation. I'm just posting it here since I believe it can help the community.
User avatar
VerbalBot
User avatar
Non-Human User
Joined: 01 Oct 2013
Last visit: 04 Jan 2021
Posts: 19,424
Own Kudos:
Posts: 19,424
Kudos: 1,010
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Automated notice from GMAT Club VerbalBot:

A member just gave Kudos to this thread, showing it’s still useful. I’ve bumped it to the top so more people can benefit. Feel free to add your own questions or solutions.

This post was generated automatically.
Moderators:
GMAT Club Verbal Expert
7391 posts
509 posts
363 posts