GMAT Question of the Day - Daily to your Mailbox; hard ones only

It is currently 13 Dec 2019, 03:13

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

Birds and mammals can be infected with West Nile virus only through

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

Find Similar Topics 
Senior Manager
Senior Manager
avatar
D
Status: PhD-trained. Education, Research, Teaching, Training, Consulting and Advisory Services
Joined: 23 Apr 2019
Posts: 438
CAT Tests
Birds and mammals can be infected with West Nile virus only through  [#permalink]

Show Tags

New post 26 Nov 2019, 14:42
2
00:00
A
B
C
D
E

Difficulty:

  35% (medium)

Question Stats:

66% (01:37) correct 34% (01:55) wrong based on 114 sessions

HideShow timer Statistics

Birds and mammals can be infected with West Nile virus only through mosquito bites. Mosquitoes, in turn, become infected with the virus when they bite certain infected birds or mammals. The virus was originally detected in northern Africa and spread to North America in the 1990s. Humans sometimes catch West Nile virus, but the virus never becomes abundant enough in human blood to infect a mosquito.

The statements above, if true, most strongly support which one of the following?

(A) West Nile virus will never be a common disease among humans.

(B) West Nile virus is most common in those parts of North America with the highest density of mosquitoes.

(C) Some people who become infected with West Nile virus never show symptoms of illness.

(D) West Nile virus infects more people in northern Africa than it does in North America.

(E) West Nile virus was not carried to North America via an infected person.
Intern
Intern
avatar
Joined: 23 Sep 2017
Posts: 3
Re: Birds and mammals can be infected with West Nile virus only through  [#permalink]

Show Tags

New post 26 Nov 2019, 21:17
A is the correct answer.

(A) Correct as the threshold value will never reach.

(B) No evidence as such.

(C) Symptoms of illness is out of scope.

(D) No evidence as such.

(E) Source/carrier is not being discussed.
Senior Manager
Senior Manager
avatar
S
Joined: 17 Sep 2016
Posts: 317
Re: Birds and mammals can be infected with West Nile virus only through  [#permalink]

Show Tags

New post 27 Nov 2019, 21:48
I'd like E,

because last sentence says: but the virus never becomes abundant enough in human blood to infect a mosquito. so mosquito won't be infected from human, if the virus spread, it must be from mosquito that be infected from other source except human
what's the OE?
Verbal Forum Moderator
User avatar
V
Status: Greatness begins beyond your comfort zone
Joined: 08 Dec 2013
Posts: 2435
Location: India
Concentration: General Management, Strategy
Schools: Kelley '20, ISB '19
GPA: 3.2
WE: Information Technology (Consulting)
GMAT ToolKit User Reviews Badge CAT Tests
Re: Birds and mammals can be infected with West Nile virus only through  [#permalink]

Show Tags

New post 28 Nov 2019, 07:47
Birds and mammals can be infected with West Nile virus only through mosquito bites. Mosquitoes, in turn, become infected with the virus when they bite certain infected birds or mammals. The virus was originally detected in northern Africa and spread to North America in the 1990s. Humans sometimes catch West Nile virus, but the virus never becomes abundant enough in human blood to infect a mosquito.

Type- inference
1. Mosquitoes, in turn, become infected with the virus when they bite certain infected birds or mammals
2. Humans sometimes catch West Nile virus, but the virus never becomes abundant enough in human blood to infect a mosquito.

(A) West Nile virus will never be a common disease among humans.- incorrect, will never is too strong, we know that humans do not transmit

(B) West Nile virus is most common in those parts of North America with the highest density of mosquitoes.- incorrect, do we know whether birds and mammals are present in that part?

(C) Some people who become infected with West Nile virus never show symptoms of illness.- incorrect, the visibility of symptoms is not discussed

(D) West Nile virus infects more people in northern Africa than it does in North America.- incorrect, we are not given any information to make a comparison

(E) West Nile virus was not carried to North America via an infected person.- Correct- on combining 1 and 2.

Answer E
_________________
When everything seems to be going against you, remember that the airplane takes off against the wind, not with it. - Henry Ford
The Moment You Think About Giving Up, Think Of The Reason Why You Held On So Long
Manager
Manager
User avatar
S
Joined: 20 Feb 2017
Posts: 99
Location: United States
CAT Tests
Re: Birds and mammals can be infected with West Nile virus only through  [#permalink]

Show Tags

New post 30 Nov 2019, 22:31
GMAT Aspirant wrote:
A is the correct answer.

(A) Correct as the threshold value will never reach.

(B) No evidence as such.

(C) Symptoms of illness is out of scope.

(D) No evidence as such.

(E) Source/carrier is not being discussed.


The threshold value is relevant for infection of other humans through humans not for humans infection.
GMAT Club Bot
Re: Birds and mammals can be infected with West Nile virus only through   [#permalink] 30 Nov 2019, 22:31
Display posts from previous: Sort by

Birds and mammals can be infected with West Nile virus only through

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  





Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne