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08 Sep 2019, 14:35
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Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
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Geothermal power plants produce power using heat from underground reservoirs of hot water or steam heated by the surrounding rock. In the limited areas of the world where such underground hot water and steam can currently be reached by drilling, geothermal power plants produce power more economically than conventional, fossil fuel power plants. However, advocates contend tat in the near future economical power from geothermal power plants will be available in most areas.
Which one of the following, if true, most helps to justify the advocates' contention?
(A) Conventional power plants, unlike geothermal power plants, release large amounts of pollutants into the air
(B) A typical geothermal power plant produces at least as much energy as a typical conventional power plant
(C) The high start-up costs of geothermal power plants discourages their construction even in locations where they are more economical than conventional power plants in the long run
(D) Advanced drilling technology is being developed that will soon make it both feasible and economical to drill wells many timers deeper than it is currently possible to drill
(E) Recent research has to discoveries that could significantly lower production costs for nearly all types of power plants
Which one of the following, if true, most helps to justify the advocates' contention?
(A) Conventional power plants, unlike geothermal power plants, release large amounts of pollutants into the air
(B) A typical geothermal power plant produces at least as much energy as a typical conventional power plant
(C) The high start-up costs of geothermal power plants discourages their construction even in locations where they are more economical than conventional power plants in the long run
(D) Advanced drilling technology is being developed that will soon make it both feasible and economical to drill wells many timers deeper than it is currently possible to drill
(E) Recent research has to discoveries that could significantly lower production costs for nearly all types of power plants
mykrasovski
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12 Sep 2019, 20:15
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The advocates content that economical geothermal power will be soon available in most areas. The question asks to support that contention, i.e. we need to strengthen the conclusion of the argument.
(A) Conventional power plants, unlike geothermal power plants, release large amounts of pollutants into the air
- Okay. But even if that is the case, this statement neither strengthens nor weakens the conclusion. Incorrect.
(B) A typical geothermal power plant produces at least as much energy as a typical conventional power plant
- Hm, maybe one Geothermal power plant can produce 10x the amount of power compared to the output of the conventional power plant. But maybe just 1.1x more... Let's keep this answer choice until we find a better one. Maybe the answer?
(C) The high start-up costs of geothermal power plants discourages their construction even in locations where they are more economical than conventional power plants in the long run
- Incorrect. This answer choice weakens the argument big time. If the statement C is true, then the geothermal power won't be available in most places soon.
(D) Advanced drilling technology is being developed that will soon make it both feasible and economical to drill wells many timers deeper than it is currently possible to drill
- Alright, advanced drilling will make it both feasible and economical to develop plants that can extract geothermal power from very deep locations. This essentially means that geothermal power will be more affordable and accessible soon. Much better option than B. Correct!
(E) Recent research has to discoveries that could significantly lower production costs for nearly all types of power plants
- Hm... Power production costs for nearly all types of power plants can go down... this means that conventional power plants will become cheaper to operate, so the power that they produce will be cheaper than that nowadays. Why would anyone want any alternative power sources? Not a very good choice.
(A) Conventional power plants, unlike geothermal power plants, release large amounts of pollutants into the air
- Okay. But even if that is the case, this statement neither strengthens nor weakens the conclusion. Incorrect.
(B) A typical geothermal power plant produces at least as much energy as a typical conventional power plant
- Hm, maybe one Geothermal power plant can produce 10x the amount of power compared to the output of the conventional power plant. But maybe just 1.1x more... Let's keep this answer choice until we find a better one. Maybe the answer?
(C) The high start-up costs of geothermal power plants discourages their construction even in locations where they are more economical than conventional power plants in the long run
- Incorrect. This answer choice weakens the argument big time. If the statement C is true, then the geothermal power won't be available in most places soon.
(D) Advanced drilling technology is being developed that will soon make it both feasible and economical to drill wells many timers deeper than it is currently possible to drill
- Alright, advanced drilling will make it both feasible and economical to develop plants that can extract geothermal power from very deep locations. This essentially means that geothermal power will be more affordable and accessible soon. Much better option than B. Correct!
(E) Recent research has to discoveries that could significantly lower production costs for nearly all types of power plants
- Hm... Power production costs for nearly all types of power plants can go down... this means that conventional power plants will become cheaper to operate, so the power that they produce will be cheaper than that nowadays. Why would anyone want any alternative power sources? Not a very good choice.
rck1099
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13 Sep 2019, 08:04
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I like D
(A) Conventional power plants, unlike geothermal power plants, release large amounts of pollutants into the air
Irrelevant to the fact that advocates think geothermal energy will become available in more areas
(B) A typical geothermal power plant produces at least as much energy as a typical conventional power plant
Nothing to do with it becoming more available
(C) The high start-up costs of geothermal power plants discourages their construction even in locations where they are more economical than conventional power plants in the long run
This would have a negative affect in the power plants becomeing more widespread
(D) Advanced drilling technology is being developed that will soon make it both feasible and economical to drill wells many timers deeper than it is currently possible to drill
Better drilling tech = more access = more availability
(E) Recent research has to discoveries that could significantly lower production costs for nearly all types of power plants
Irrelevant
(A) Conventional power plants, unlike geothermal power plants, release large amounts of pollutants into the air
Irrelevant to the fact that advocates think geothermal energy will become available in more areas
(B) A typical geothermal power plant produces at least as much energy as a typical conventional power plant
Nothing to do with it becoming more available
(C) The high start-up costs of geothermal power plants discourages their construction even in locations where they are more economical than conventional power plants in the long run
This would have a negative affect in the power plants becomeing more widespread
(D) Advanced drilling technology is being developed that will soon make it both feasible and economical to drill wells many timers deeper than it is currently possible to drill
Better drilling tech = more access = more availability
(E) Recent research has to discoveries that could significantly lower production costs for nearly all types of power plants
Irrelevant
