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Hi KarishmaB

Here's what I thought during the analysis to reject Option C and Select D. Can you please help identify the flaw here?

OPTION C -

YES - Effects the conclusion.

NO - It doesn't affect the conclusion. Okay so even if a considerable percentage of carriage use doesn't occur, so what? The roads are soft. The damage arising from even not a considerable percentage can be substantial.

OPTION D -

YES - Now what if the sections of roads that are closed, are not the sections that are more considerably affected? Maybe the walkers and runners use the part of the roads that can be damaged. We don't know which sections are closed and which aren't.

NO - Ah, that's cool. No challenges there.


KarishmaB
akhil911
In Acadia National Park, there is a large network of gravel carriage roads that are closed to vehicular traffic but open to a variety of other uses. In an attempt to substantially limit the damage that occurs to the carriage roads from overuse during the course of a year, park officials are imposing strict rules during the spring season. From March 15th to May 1st, when the roads are especially soft and more easily damaged, horses and bikes will be prohibited from all carriage roads, and walkers and runners will only be allowed on certain sections.

In assessing whether the park officials' plan to limit the damage to the carriage roads will be successful, it would be most useful to know which of the following?

A. Whether bikes and horses cause more damage to the carriage roads than walkers and runners do.
B. Whether snowmobilers are allowed to use the carriage roads during the winter months.
C. Whether a considerable percentage of carriage road usage occurs from March 15th to May 1st.
D. Whether some sections of the carriage roads are more susceptible to damage from overuse than others.
E. Whether a substantial percentage of visitors to the park ride their bikes on the carriage roads during their visit.


Useful to evaluate questions are usually a bit tricky. You should try to answer the question in 2 ways - with a yes and a no and see if it matters.

- Gravel carriage roads are closed to vehicular traffic but open to a variety of other uses.
- To limit the damage from overuse during the course of a year, park officials are imposing strict rules from March 15th to May 1st
- At this time, the roads are especially soft and more easily damaged
- Horses and bikes will be prohibited and walkers and runners will only be allowed on certain sections.

Which of the following will be useful to evaluate?

A. Whether bikes and horses cause more damage to the carriage roads than walkers and runners do.

Irrelevant. It doesn't matter which one causes more damage. Even if bikes and horses cause less damage than walkers and runners, it may not be possible to ban walkers and runners completely. If on a scale of 1 to 10, bikes cause damage of 4 and runners cause a damage of 5, does it mean that the plan will not be successful?

B. Whether snowmobilers are allowed to use the carriage roads during the winter months.

We do not know whether snowmobilers damage the road so knowing this doesn't help.

C. Whether a considerable percentage of carriage road usage occurs from March 15th to May 1st.

We want to reduce the damage to the road. We are banning certain usage from March 15th to May 1st. There should be some percentage of usage in this time. What if the road is not used at all anyway in this time? Then banning it at this time will not reduce damage.
You can answer this question in two ways:
Yes, a considerable percentage of carriage road usage occurs from March 15th to May 1st - Then the ban will help reduce damage
No, there is little carriage road usage from March 15th to May 1st - Then the ban may not help in limiting damage

D. Whether some sections of the carriage roads are more susceptible to damage from overuse than others.

Irrelevant. Even if some sections are more susceptible to damage and some less, it doesn't tell us whether it affects the success of our plan.

E. Whether a substantial percentage of visitors to the park ride their bikes on the carriage roads during their visit.

It doesn't specify the time period. Even if a substantial percentage of visitors to the park ride their bikes on the carriage roads during their visit, what if they do it in June - July? A yes or a no here doesn't help us evaluate the success of our plan until and unless we have more information.

Answer (C)
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Hi KarishmaB

Here's what I thought during the analysis to reject Option C and Select D. Can you please help identify the flaw here?

OPTION C -

YES - Effects the conclusion.

NO - It doesn't affect the conclusion. Okay so even if a considerable percentage of carriage use doesn't occur, so what? The roads are soft. The damage arising from even not a considerable percentage can be substantial.

OPTION D -

YES - Now what if the sections of roads that are closed, are not the sections that are more considerably affected? Maybe the walkers and runners use the part of the roads that can be damaged. We don't know which sections are closed and which aren't.

NO - Ah, that's cool. No challenges there.


KarishmaB
akhil911
In Acadia National Park, there is a large network of gravel carriage roads that are closed to vehicular traffic but open to a variety of other uses. In an attempt to substantially limit the damage that occurs to the carriage roads from overuse during the course of a year, park officials are imposing strict rules during the spring season. From March 15th to May 1st, when the roads are especially soft and more easily damaged, horses and bikes will be prohibited from all carriage roads, and walkers and runners will only be allowed on certain sections.

In assessing whether the park officials' plan to limit the damage to the carriage roads will be successful, it would be most useful to know which of the following?

A. Whether bikes and horses cause more damage to the carriage roads than walkers and runners do.
B. Whether snowmobilers are allowed to use the carriage roads during the winter months.
C. Whether a considerable percentage of carriage road usage occurs from March 15th to May 1st.
D. Whether some sections of the carriage roads are more susceptible to damage from overuse than others.
E. Whether a substantial percentage of visitors to the park ride their bikes on the carriage roads during their visit.


Useful to evaluate questions are usually a bit tricky. You should try to answer the question in 2 ways - with a yes and a no and see if it matters.

- Gravel carriage roads are closed to vehicular traffic but open to a variety of other uses.
- To limit the damage from overuse during the course of a year, park officials are imposing strict rules from March 15th to May 1st
- At this time, the roads are especially soft and more easily damaged
- Horses and bikes will be prohibited and walkers and runners will only be allowed on certain sections.

Which of the following will be useful to evaluate?

A. Whether bikes and horses cause more damage to the carriage roads than walkers and runners do.

Irrelevant. It doesn't matter which one causes more damage. Even if bikes and horses cause less damage than walkers and runners, it may not be possible to ban walkers and runners completely. If on a scale of 1 to 10, bikes cause damage of 4 and runners cause a damage of 5, does it mean that the plan will not be successful?

B. Whether snowmobilers are allowed to use the carriage roads during the winter months.

We do not know whether snowmobilers damage the road so knowing this doesn't help.

C. Whether a considerable percentage of carriage road usage occurs from March 15th to May 1st.

We want to reduce the damage to the road. We are banning certain usage from March 15th to May 1st. There should be some percentage of usage in this time. What if the road is not used at all anyway in this time? Then banning it at this time will not reduce damage.
You can answer this question in two ways:
Yes, a considerable percentage of carriage road usage occurs from March 15th to May 1st - Then the ban will help reduce damage
No, there is little carriage road usage from March 15th to May 1st - Then the ban may not help in limiting damage

D. Whether some sections of the carriage roads are more susceptible to damage from overuse than others.

Irrelevant. Even if some sections are more susceptible to damage and some less, it doesn't tell us whether it affects the success of our plan.

E. Whether a substantial percentage of visitors to the park ride their bikes on the carriage roads during their visit.

It doesn't specify the time period. Even if a substantial percentage of visitors to the park ride their bikes on the carriage roads during their visit, what if they do it in June - July? A yes or a no here doesn't help us evaluate the success of our plan until and unless we have more information.

Answer (C)

Here is the main point of CR - I need to keep the given conclusion/aim at the top of my mind at all times.

Aim of the plan: to substantially limit the damage that occurs to the carriage roads from overuse during the course of a year
What is the plan? Restrict usage in spring for 45 days when roads are very soft.


C. Whether a considerable percentage of carriage road usage occurs from March 15th to May 1st.

This is relevant because what if roads are not used much anyway in these 45 days because they are soft? What if anyway horses and bikes and even people avoid the road during this time? Then will the restrictions have any impact? Likely not.
Keep in mind - "considerable" means "meaningful". So when we say that a considerable percentage of carriage road usage does not occur in spring, it means that whatever use does occur is kind of meaningless in these circumstances. Hence the impact of the restriction will not be meaningful. The reduction in damage will not be considerable then.

D. Whether some sections of the carriage roads are more susceptible to damage from overuse than others

Does it matter?
Say all roads are equally susceptible. Since restrictions are being placed (more on some roads and less on some roads), damage will be reduced.
Say some roads are more susceptible, some less. Still, since restrictions are being placed, damage will be reduced. We don't know which restrictions are being placed on which roads and we don't care. Some are being placed on all roads and even the ones which are less susceptible, if protected, will lead to reduction in damage.

That is why answer is (C) only.
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