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Mechmeera

Focus on conclusion.

Conclusion:
by using recycled glass instead of glass made from raw materials, bottlers can lower their costs and benefit the environment at the same time

Particularly note first few words: "by using recycled glass instead of glass made from raw materials"

This implies that we are talking about the case when we have the choice between recycled and raw material. So B cannot be assumption. Logically also its obvious that recycled material would fall short of the total requirement by the industry but question is when you have the choice would you use it?
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Mechmeera
Environmentalist: It takes less energy to make molten glass from recycled glass than from raw materials. Once the recycled glass or raw materials have been turned into molten glass, making bottles from recycled glass follows the same process as making bottles from raw materials. Obviously, soft drink bottlers who make a large percentage of their bottles from recycled glass have significant
energy savings. Therefore, by using recycled glass instead of glass made from raw materials, bottlers can lower their costs and benefit the environment at the same time.

Which one of the following is an assumption on which the argument relies?
(A) The process of making bottles from plastic that has been recycled is not significantly more energy efficient than is the process of making bottles from glass that has been recycled.
(B) The amount of glass that is currently recycled each year is enough to supply the major soft drink bottlers with materials for a large
percentage of the glass bottles they make that year.
(C) Most consumers are not able to distinguish bottles made from recycled glass from glass bottles made from raw materials.
(D) Purchasing and transport costs are not so much greater for recycled glass than for raw materials that they outweigh the savings in energy costs resulting from the use of recycled glass.
(E) The process of making molten glass from recycled glass requires fewer steps than does the process of making molten glass from raw materials.

I feel Main fight is between B and D.
conclusion says that by using recycled glass instead of glass made from raw materials, bottlers can lower their costs and benefit the environment at the same time. But inorder to use recycled glass instead of glass from raw material they should have enough amout of material as in B.

Option D.
If the purchasing cost for the recycled glass is higher than the raw materials, then the manufacturer will go for the raw materials instead and this goes against the conclusion drawn by the environmentalist.

Option B does not in any case goes against the conclusion even if the recycled material is short of requirement. Neither does this option say anything about the costs incurred by the manufacturer nor does it state any benefit for the environment.

Other options are irrelevant.

Thanks,
Rohan
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Nevernevergiveup
Environmentalist: It takes less energy to make molten glass from recycled glass than from raw materials. Once the recycled glass or raw materials have been turned into molten glass, making bottles from recycled glass follows the same process as making bottles from raw materials. Obviously, soft drink bottlers who make a large percentage of their bottles from recycled glass have significant
energy savings. Therefore, by using recycled glass instead of glass made from raw materials, bottlers can lower their costs and benefit the environment at the same time.

Which one of the following is an assumption on which the argument relies?
(A) The process of making bottles from plastic that has been recycled is not significantly more energy efficient than is the process of making bottles from glass that has been recycled.
(B) The amount of glass that is currently recycled each year is enough to supply the major soft drink bottlers with materials for a large
percentage of the glass bottles they make that year.
(C) Most consumers are not able to distinguish bottles made from recycled glass from glass bottles made from raw materials.
(D) Purchasing and transport costs are not so much greater for recycled glass than for raw materials that they outweigh the savings in energy costs resulting from the use of recycled glass.
(E) The process of making molten glass from recycled glass requires fewer steps than does the process of making molten glass from raw materials.

first of all..A, C, and E can easily be eliminated. it's clearly between B and D.
D is more strong. if we negate D - then the argument falls apart. on the other hand, if we negate B, we can still be cost efficient. the argument says "by using recycled glass, cost efficiency can be attained". therefore, it is not needed for B to be true for the argument to be true.

D for me.
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+1 for D

In B,we don't care whether the amount of glass currently recycled each year is enough to supply.As long as,the bottlers can make a large percentage of their bottles from recycled glass,they still benefit from the cost saving.On the other hand,if the additional costs,i.e. purchasing and transport costs,commensurate the saving cost,the bottler will not at all benefit from the cost-saving from the recycling process.
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The question clearly concludes that the cost can be saved by recycling the glass,but by making sure that the transportation and other charges are not very big so that the profits are still considerable. therfore D is the right answer.
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I fall into the trap of this question. One reason is the question is quite long, I cannot remember every detail.
I can tell B,C,E are all wrong.
A is wrong b/c the argument already states that the process is same.
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(D) Purchasing and transport costs are not so much greater for recycled glass than for raw materials that they outweigh the savings in energy costs resulting from the use of recycled glass

Option 1: Costs are high => would destroy the argument that there are cost savings. if it cost a billion dollars to transport, you wouldn't use recycled materials.
Option 2: Costs are low => would help the argument that there are cost savings
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I've noticed that the conclusion is actually a theory. The conclusion states that when companies take a certain step, they would profit by some means. This makes D better than B. If the conclusion were like, Companies must take this step to make etc. benefits, then B might work.
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