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# The Lichtenstein night adder, a species of snake, drives away Silver-s

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Manager
Joined: 26 Sep 2018
Posts: 58
Location: Sweden
The Lichtenstein night adder, a species of snake, drives away Silver-s  [#permalink]

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03 Jan 2019, 07:15
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75% (01:39) correct 25% (02:02) wrong based on 177 sessions

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The Lichtenstein night adder, a species of snake, drives away Silver-spotted Skipper insects and takes their nests for its own. When such a nest is destroyed, the adders wander, never spending consecutive days in the same place, until they come across another nest of the Silver-spotted Skipper insect. Clearly, the Lichtenstein night adder does not know how to make nests of its own.

Which of the following, if true, most strengthens the argument?

A. Many sub-species of the adder are known to make their own nests from scratch.

B.In the summer months, the Lichtenstein night adder snake prefers sleeping by hanging from a tree and not staying anywhere on the ground level.

C. In Nigram and Tenitol, countries where Silver-spotted Skippers are not found, the Lichtenstein night adder makes its home in the nests of Cicada insects.

D. The two species of snakes that are closely related to the Lichtenstein night adder species do not live in nests at all.

E. There are no significant differences between the nest of a Silver-spotted Skipper insect and that of some species of adder snakes that make nests of their own.
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The Lichtenstein night adder, a species of snake, drives away Silver-s  [#permalink]

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03 Jan 2019, 08:31
pineapple123456 wrote:
The Lichtenstein night adder, a species of snake, drives away Silver-spotted Skipper insects and takes their nests for its own. When such a nest is destroyed, the adders wander, never spending consecutive days in the same place, until they come across another nest of the Silver-spotted Skipper insect. Clearly, the Lichtenstein night adder does not know how to make nests of its own.

Which of the following, if true, most strengthens the argument?

A. Many sub-species of the adder are known to make their own nests from scratch.
Incorrect, a weakener.

B.In the summer months, the Lichtenstein night adder snake prefers sleeping by hanging from a tree and not staying anywhere on the ground level.
Incorrect, irrelevant, nests are not mentioned in this choice.

C. In Nigram and Tenitol, countries where Silver-spotted Skippers are not found, the Lichtenstein night adder makes its home in the nests of Cicada insects.
Correct, a strengthener.

D. The two species of snakes that are closely related to the Lichtenstein night adder species do not live in nests at all.
Incorrect, other species are not in question.

E. There are no significant differences between the nest of a Silver-spotted Skipper insect and that of some species of adder snakes that make nests of their own.
Incorrect, irrelevant. Difference between nest is not in question.

IMO C as explained in the options above.
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Re: The Lichtenstein night adder, a species of snake, drives away Silver-s  [#permalink]

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03 Jan 2019, 08:51
This question is similar to that OG croton jays question..

Posted from my mobile device
Manager
Joined: 15 Jun 2015
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Location: India
Re: The Lichtenstein night adder, a species of snake, drives away Silver-s  [#permalink]

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16 May 2020, 23:23
The Lichtenstein night adder, a species of snake, drives away Silver-spotted Skipper insects and takes their nests for its own. When such a nest is destroyed, the adders wander, never spending consecutive days in the same place, until they come across another nest of the Silver-spotted Skipper insect. Clearly, the Lichtenstein night adder does not know how to make nests of its own.

CONCLUSION: the Lichtenstein night adder does not know how to make nests of its own.
REASONING: We need to find the option which shows that the snake does not know how to make nest.

Which of the following, if true, most strengthens the argument?

A. Many sub-species of the adder are known to make their own nests from scratch. - extreme language & weakens the argument

B.In the summer months, the Lichtenstein night adder snake prefers sleeping by hanging from a tree and not staying anywhere on the ground level. - out of scope

C. In Nigram and Tenitol, countries where Silver-spotted Skippers are not found, the Lichtenstein night adder makes its home in the nests of Cicada insects. - CORRECT

D. The two species of snakes that are closely related to the Lichtenstein night adder species do not live in nests at all. - Weakens the argument

E. There are no significant differences between the nest of a Silver-spotted Skipper insect and that of some species of adder snakes that make nests of their own. - out of scope
Director
Joined: 05 Jan 2019
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The Lichtenstein night adder, a species of snake, drives away Silver-s  [#permalink]

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18 May 2020, 20:20
The summary of this argument is as follows:

the snake scares away the skipper insect --> snake takes the nest and uses the nest for its own purposes --> When the snakes don't have access to this nest, they wander around in search of other nests.

The conclusion: the snakes don't know how to build their own nest.

To strengthen this conclusion, we need an answer choice that proves that the Lichtenstein night adder snake exhibits the same behavior (of always depending on other animal's nests) consistently.

Now, let's take a look at the available answer choices:

A. Many sub-species of the adder are known to make their own nests from scratch. - this answer choice is incorrect because the passage talks only about the Lichtenstein night adder snakes, not about any other snake (sub)species. We need to stick close to the information that's clearly provided in the prompt.

B.In the summer months, the Lichtenstein night adder snake prefers sleeping by hanging from a tree and not staying anywhere on the ground level. - How does the Lichtenstein night adder's sleeping pattern prove that they can't build their own nests? (B) therefore is irrelevant. Eliminate (B)

C. In Nigram and Tenitol, countries where Silver-spotted Skippers are not found, the Lichtenstein night adder makes its home in the nests of Cicada insects. - Okay. Now, this proves that the Lichtenstein night adder snake exhibits the same behavior (of using nests made by other animals). This is what we are looking for. Hence, (C) is the right answer.

D. The two species of snakes that are closely related to the Lichtenstein night adder species do not live in nests at all. - The passage is only concerned about the Lichtenstein night adder snake, not any other species of snakes. Hence, (D) is irrelevant.

E. There are no significant differences between the nest of a Silver-spotted Skipper insect and that of some species of adder snakes that make nests of their own. - we are concerned with the idea that the Lichtenstein night adder snake is using other's nests. Nowhere in the passage is the idea of nest quality even mentioned. So, (E) does not strengthen the conclusion
Manager
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Re: The Lichtenstein night adder, a species of snake, drives away Silver-s  [#permalink]

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10 Jul 2020, 13:46
Premise ; adder snake lives in others nest and we need to find reason for it .
A. Many sub-species of the adder are known to make their own nests from scratch.
weakens it rather

B.In the summer months, the Lichtenstein night adder snake prefers sleeping by hanging from a tree and not staying anywhere on the ground level.
Doesn't talk about anything of nest, One may assume they don't know how to build nest and that is why hanging, but then it only talks about summer, not whole year. Irrelevant

C. In Nigram and Tenitol, countries where Silver-spotted Skippers are not found, the Lichtenstein night adder makes its home in the nests of Cicada insects.
Good choice, It means this is their biological habit of living in others nest , whereever in world. Correct.

D. The two species of snakes that are closely related to the Lichtenstein night adder species do not live in nests at all.
we are not talking for other species. Incorrect

E. There are no significant differences between the nest of a Silver-spotted Skipper insect and that of some species of adder snakes that make nests of their own.
Re: The Lichtenstein night adder, a species of snake, drives away Silver-s   [#permalink] 10 Jul 2020, 13:46