Last visit was: 19 Nov 2025, 05:56 It is currently 19 Nov 2025, 05:56
Home
GMAT
Messages
Tests
Schools
Events
Rewards
Chat
My Profile
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.
Go to My Error Log Learn more
Close
Request Expert Reply
Confirm Cancel
Back to Forum
Create Topic
User avatar
generis
User avatar
Senior SC Moderator
Joined: 22 May 2016
Last visit: 18 Jun 2022
Posts: 5,272
Own Kudos:
37,387
 [2]
Given Kudos: 9,464
Expert
Expert reply
Posts: 5,272
Kudos: 37,387
 [2]
A council of ecologists in Hawaii have concluded that much of the 27 Nov 2021, 20:12
1
Kudos
Add Kudos
1
Bookmarks
Bookmark this Post
00:00
Start Timer
Pause Timer
Resume Timer
Show Answer
Hide
Show
History
B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!

Difficulty:

15% (low)

Question Stats:

75% (01:05) correct 25% (01:27) wrong based on 125 sessions

History

Date
Time
Result
Not Attempted Yet

Project SC Butler: Sentence Correction (SC1)


For SC butler Questions Click Here


A council of ecologists in Hawaii have concluded that much of the currently uncontrolled invasive species on the island chain were arriving in the holds of cargo ships.


A) have concluded that much of the currently uncontrolled invasive species on the island chain were arriving

B) has concluded that many of the currently uncontrolled invasive species on the island chain arrived

C) have concluded that many of the currently uncontrolled invasive species on the island chain had arrived

D) concluded that many of the currently uncontrolled invasive species on the island chain would arrive

E) has concluded that much of the currently uncontrolled invasive species on the island chain had arrived
ShowHide Answer
Official Answer
B
User avatar
generis
User avatar
Senior SC Moderator
Joined: 22 May 2016
Last visit: 18 Jun 2022
Posts: 5,272
Own Kudos:
37,387
 [1]
Given Kudos: 9,464
Expert
Expert reply
Posts: 5,272
Kudos: 37,387
 [1]
A council of ecologists in Hawaii have concluded that much of the 27 Nov 2021, 20:15
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
For forum member aspirants and non-experts:
All correct answers that contain good explanations will be awarded ONE KUDOS.

Exceptional answers may be "bumped" to Best Community Reply.

Kudos will be awarded after the OE is posted.
User avatar
zhanbo
User avatar
Joined: 27 Feb 2017
Last visit: 07 Jul 2024
Posts: 1,467
Own Kudos:
2,454
 [1]
Given Kudos: 114
Location: United States (WA)
GMAT 1: 760 Q50 V42
GMAT 2: 760 Q50 V42
GRE 1: Q169 V168
GRE 2: Q170 V170
Expert
Expert reply
GMAT 2: 760 Q50 V42
GRE 1: Q169 V168
GRE 2: Q170 V170
Posts: 1,467
Kudos: 2,454
 [1]
A council of ecologists in Hawaii have concluded that much of the 27 Nov 2021, 20:56
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
My answer is (B). It took me 38 seconds.

(A) "A council" is singular and thus does not agree with "have"
For countable noun such as "species", use "many" rather than "much".

(C) "A council" is singular and thus does not agree with "have"

(D) "would arrive" indicates an event to take place in the future, but the subject is "currently uncontrolled invasive species on the island".

(E) For countable noun such as "species", use "many" rather than "much".
User avatar
ElninoEffect
User avatar
Joined: 07 Apr 2020
Last visit: 02 Sep 2022
Posts: 319
Own Kudos:
491
 [2]
Given Kudos: 72
Location: India
Concentration: Strategy, Technology
Schools: IIMA PGPX'23 ISB '23 XLRI
WE:Engineering (Computer Software)
Schools: IIMA PGPX'23 ISB '23 XLRI
Posts: 319
Kudos: 491
 [2]
A council of ecologists in Hawaii have concluded that much of the 28 Nov 2021, 09:04
1
Kudos
Add Kudos
1
Bookmarks
Bookmark this Post
generis
For forum member aspirants and non-experts:
All correct answers that contain good explanations will be awarded ONE KUDOS.

Exceptional answers may be "bumped" to Best Community Reply.

Kudos will be awarded after the OE is posted.
Show more

A council of ecologists in Hawaii have concluded that much of the currently uncontrolled invasive species on the island chain were arriving in the holds of cargo ships.


A) have concluded that much of the currently uncontrolled invasive species on the island chain were arriving

B) has concluded that many of the currently uncontrolled invasive species on the island chain arrived

C) have concluded that many of the currently uncontrolled invasive species on the island chain had arrived

D) concluded that many of the currently uncontrolled invasive species on the island chain would arrive

E) has concluded that much of the currently uncontrolled invasive species on the island chain had arrived[/quote]

Meaning:
A council of ecologists has concluded something. What.? That many of the uncontrolled invasive species on the island chain arrived in the holds of cargo ships.

Subject-Verb Agreement:
Subject: Council, not Ecologists why.? Ecologists are lying under the prepositional phrase 'of'.
So the Verb: should be Has as council is singular.

So, A and C are out.

With D would arrive changes the meaning of the sentence as now it states council concluded that invasive species would arrive(in future). So, D is out.

Left with B & E

There are two errors with E
1) Use of much for countable noun (species) many should be used
2) use of had arrived is wrong as there is only one event happening in that time frame. So a simple past will suffice. E is out

B is the right answer.
User avatar
sritamasia
User avatar
Joined: 11 Oct 2021
Last visit: 25 Feb 2024
Posts: 255
Own Kudos:
423
 [1]
Given Kudos: 96
Status:Applying to ISB EEO, HEC Paris MiM, ESSEC MIM, SPJIMR PGDM
Location: India
Concentration: Marketing, Strategy
Schools: ISB '24
GMAT 1: 710 Q49 V38 (Online)
GPA: 3.81
WE:Brand Management (Insurance)
Products:
My Reviews
Schools: ISB '24
GMAT 1: 710 Q49 V38 (Online)
Posts: 255
Kudos: 423
 [1]
A council of ecologists in Hawaii have concluded that much of the 28 Nov 2021, 11:36
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
A council of ecologists in Hawaii have concluded that much of the currently uncontrolled invasive species on the island chain were arriving in the holds of cargo ships.
Subject - A Council - Singular so Verb - Singular
Simple words: A council has predicted that some species came via some medium.


A) have concluded that much of the currently uncontrolled invasive species on the island chain were arriving
Delete for "Have". There's no need for Continuous Tense: "arriving". Much is wrong with the countable noun "species".

B) has concluded that many of the currently uncontrolled invasive species on the island chain arrived
Has - Fine, Arrived - Fine. Many - Fine

C) have concluded that many of the currently uncontrolled invasive species on the island chain had arrived
Delete for "Have". Had Arrived - Past Perfect is Wrong as there are no Double Pasts(2 Actions)

D) concluded that many of the currently uncontrolled invasive species on the island chain would arrive
Would arrive - This construct is used in Future With Respect to Past. The meaning suggests no future prediction.

E) has concluded that much of the currently uncontrolled invasive species on the island chain had arrive
"has" is fine but "had arrive" is clearly wrong- An illogical Construct. Mixing Past(had) + Present(arrive). Much is wrong with the countable noun "species".
User avatar
Vatsal7794
User avatar
Retired Moderator
Joined: 17 Mar 2021
Last visit: 12 Oct 2025
Posts: 249
Own Kudos:
127
 [1]
Given Kudos: 123
Location: India
Schools: IIMB EPGP'25 Schulich Sep'24 intake Fisher '26 ISB '25
GMAT 1: 660 Q44 V36
GPA: 3.5
Schools: IIMB EPGP'25 Schulich Sep'24 intake Fisher '26 ISB '25
GMAT 1: 660 Q44 V36
Posts: 249
Kudos: 127
 [1]
A council of ecologists in Hawaii have concluded that much of the Updated on: 28 Nov 2021, 12:14
Originally posted by Vatsal7794 on 28 Nov 2021, 11:56.
Last edited by Vatsal7794 on 28 Nov 2021, 12:14, edited 1 time in total.
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
zhanbo
My answer is (B). It took me 38 seconds.

(A) "A council" is singular and thus does not agree with "have"
For countable noun such as "species", use "many" rather than "much".

(C) "A council" is singular and thus does not agree with "have"

(D) "would arrive" indicates an event to take place in the future, but the subject is "currently uncontrolled invasive species on the island".

(E) For countable noun such as "species", use "many" rather than "much".
Show more

Posted from my mobile device

How do you solve with that speed? ..After reading the question what steps you do? Can you please elaborate?
I took 1 min 20 sec to arrive at the answer
My answer is also B
User avatar
KrishnanTN
User avatar
Joined: 01 Jun 2015
Last visit: 19 Nov 2025
Posts: 70
Own Kudos:
121
 [1]
Given Kudos: 113
Location: India
Concentration: General Management, Finance
GMAT 1: 670 Q46 V36
Products:
My Reviews
GMAT 1: 670 Q46 V36
Posts: 70
Kudos: 121
 [1]
A council of ecologists in Hawaii have concluded that much of the 28 Nov 2021, 12:11
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
A) Wrong - Council has is right, Council have is wrong.

B) RIGHT -

C) Wrong - Council has is right, Council have is wrong.

D) Wrong - The meaning is absurd. If the species are already uncontrolled on the island, it means they are already on the island.

E) WRONG - Much is used.
Moderators:
GMATNinja
GMAT Club Verbal Expert
7443 posts
GMATNinjaTwo
GMAT Club Verbal Expert
231 posts
miag
188 posts