It is currently 17 Oct 2017, 18:01

### 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

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

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# Lyme disease is caused by a bacterium transmitted to humans by deer ti

Author Message
TAGS:

### Hide Tags

Manager
Joined: 13 Mar 2009
Posts: 189

Kudos [?]: 447 [1], given: 60

Lyme disease is caused by a bacterium transmitted to humans by deer ti [#permalink]

### Show Tags

04 Oct 2009, 23:34
1
KUDOS
2
This post was
BOOKMARKED
00:00

Difficulty:

95% (hard)

Question Stats:

40% (01:31) correct 60% (02:02) wrong based on 146 sessions

### HideShow timer Statistics

Lyme disease is caused by a bacterium transmitted to humans by deer ticks. Generally deer ticks pick up the bacterium while in the larval stage from feeding on infected whitefooted mice. However, certain other species on which the larvae feed do not harbor the bacterium. Therefore, if the population of these other species were increased, the number of ticks acquiring the bacterium would likely decline.

Which of the following it would be most useful to ascertain in evaluating the argument?

(A) Whether populations of the other species on which deer tick larvae feed are found only in the areas also inhabited by white-footed mice.

(B) Whether the size of the deer tick population is currently limited by the availability of animals for the tick's larval stage to feed on.

(C) Whether the infected deer tick population could be controlled by increasing the number of animals that prey on white-footed mice.

(D) Whether deer ticks that were not infected as larvae can become infected as adults by feeding on deer on which infected deer ticks have fed.

(E) Whether the other species on which deer tick larvae feed harbor any other bacteria that ticks transmit to humans.

[Reveal] Spoiler:
Attachment:

CR.jpg [ 112.14 KiB | Viewed 5240 times ]
[Reveal] Spoiler: OA

Kudos [?]: 447 [1], given: 60

Manager
Joined: 28 Aug 2009
Posts: 75

Kudos [?]: 19 [0], given: 0

Re: Lyme disease is caused by a bacterium transmitted to humans by deer ti [#permalink]

### Show Tags

05 Oct 2009, 08:49
The argument is "if the population of other species is increased then it would decrease the no. of ticks acquiring bacterium"..
so it would be beneficial to enquire whether something like this is currently happening?..or in software terms ...we need a "Proof of Concept" for evaluating above argument
this is what the answer says.....hope it helps..

Kudos [?]: 19 [0], given: 0

Intern
Joined: 16 Aug 2009
Posts: 5

Kudos [?]: 1 [0], given: 0

Re: Lyme disease is caused by a bacterium transmitted to humans by deer ti [#permalink]

### Show Tags

08 Oct 2009, 21:47
To evaluate the argument it would helpful to know whether Deer Dicks need more number of animals to feed on. If Deer Dick larvae have enough animals to feed on then increasing the population of other animals have no effect.

Hence it would be useful to evaluate the number of animals available for deer dicks larvae to feed on and that is what choice B states

Kudos [?]: 1 [0], given: 0

Intern
Joined: 28 Apr 2009
Posts: 46

Kudos [?]: 9 [0], given: 2

Re: Lyme disease is caused by a bacterium transmitted to humans by deer ti [#permalink]

### Show Tags

12 Nov 2009, 07:06
luks like A to me.. but the word 'only' sounds too extreme and disturbing..

Kudos [?]: 9 [0], given: 2

Manager
Joined: 17 Aug 2009
Posts: 228

Kudos [?]: 293 [1], given: 25

Re: Lyme disease is caused by a bacterium transmitted to humans by deer ti [#permalink]

### Show Tags

16 Nov 2009, 09:08
1
KUDOS
Here's the connection -

Lyme disease----caused by deer ticks---deer ticks acquire it by feeding on bacterium which is in the larval stage----this bacterium uses mice as the host spreading infection

Now to decrease the offset of this disease, the argument states that we will introduce only those species that cannot serve as host carriers for the bacterium. This would lead to the bacterium feeding on inert hosts and therefore lead to a decrease in the number of lyme disease victims

B clearly states the correct evaluation of the argument by pointing out that this would be an effective way only if the host carrier plays a key role in its spread (i.e. the disease can only spread through the host-carrier concept)

Hope it helps

Consider kudos for the post

Kudos [?]: 293 [1], given: 25

SVP
Affiliations: HEC
Joined: 28 Sep 2009
Posts: 1635

Kudos [?]: 684 [0], given: 432

Concentration: Economics, Finance
GMAT 1: 730 Q48 V44
Re: Lyme disease is caused by a bacterium transmitted to humans by deer ti [#permalink]

### Show Tags

16 Nov 2009, 17:43
By process of elimination, B is the only one left standing. E is out of scope, while D is simply convoluted. Options A and C do not concern us here.
_________________

Kudos [?]: 684 [0], given: 432

Verbal Forum Moderator
Status: Getting strong now, I'm so strong now!!!
Affiliations: National Institute of Technology, Durgapur
Joined: 04 Jun 2013
Posts: 565

Kudos [?]: 694 [0], given: 80

Location: India
GPA: 3.32
WE: Information Technology (Computer Software)
Re: Lyme disease is caused by a bacterium transmitted to humans by deer ti [#permalink]

### Show Tags

24 Nov 2014, 12:54
This problem has a very subtle jump.
currently Deer Ticks (DT) feeds on WM and their population is P.
Now , when we introduce another host(s) , it may happen so that #DT increases. This increase is attributed to a new source of host available. If so is the case then the number of deer ticks may increase thus debilitating the situation further.
OA :- B
_________________

Regards,

S

Consider +1 KUDOS if you find this post useful

Kudos [?]: 694 [0], given: 80

Manager
Joined: 23 Oct 2014
Posts: 103

Kudos [?]: 57 [1], given: 66

Concentration: Marketing
Re: Lyme disease is caused by a bacterium transmitted to humans by deer ti [#permalink]

### Show Tags

24 Nov 2014, 15:45
1
KUDOS
Lyme disease is caused by a bacterium transmitted to humans by deer ticks. Generally, deer ticks pick up the bacterium while in the larval stage by feeding on infected white-footed mice. However, certain other species on which the larvae feed do not harbor the bacterium. If the population of these other species were increased, more of the larvae would be feeding on uninfected hosts, so the number of ticks acquiring the bacterium would likely decline.

Which of the following would it be most important to ascertain in evaluating the argument?

So the answer choice we are looking for must strengthen or weaken the argument. The answer choice must show why or why not it will decrease the number of ticks with the bacterium.

A. Whether populations of the other species on which deer tick larvae feed are found only in areas also inhabited by white-footed mice
The answer to this question is irrelevant.

B. Whether the size of the deer tick population is currently limited by the availability of animals for the tick's larval stage to feed on.
The conclusion states

Number of uninfected animals goes up = Number of ticks with the bacterium will go down.

If the availability of animals to feed on limits the deer tick population then this will greatly affect the decline of ticks acquiring the bacterium.

C. Whether the infected deer tick population could be controlled by increasing the number of animals that prey on white-footed mice.
We do not care about controlling the population. The conclusion only cares about the number of ticks acquiring the bacterium by the increase of other species for the larvae to feed on.

D. Whether deer ticks that were not infected as larvae can become infected as adults by feeding on deer on which infected deer ticks have fed.
We're only concerned with the larvae feeding on uninfected hosts.

E. Whether the other species on which deer tick larvae feed harbor any other bacteria that ticks transmit to humans.
We only care about the bacterium that can cause lyme disease.

Kudos [?]: 57 [1], given: 66

GMAT Club Legend
Joined: 01 Oct 2013
Posts: 10131

Kudos [?]: 261 [0], given: 0

Re: Lyme disease is caused by a bacterium transmitted to humans by deer ti [#permalink]

### Show Tags

12 Aug 2017, 06:37
Hello from the GMAT Club VerbalBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.

Kudos [?]: 261 [0], given: 0

Re: Lyme disease is caused by a bacterium transmitted to humans by deer ti   [#permalink] 12 Aug 2017, 06:37
Display posts from previous: Sort by

# Lyme disease is caused by a bacterium transmitted to humans by deer ti

 Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.