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04 May 2019, 10:41
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E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
86% (01:29) correct
14%
(01:50)
wrong
based on 341
sessions
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Although manned spaceflight to Mars is not out of the question, it does raise some important considerations. Extended time in space means extended time in weightlessness, which is linked to bone loss, muscle atrophy, cardiovascular problems, and other serious health issues. For example, astronauts who spent 28 days on Skylab, a spacestation that orbited the Earth back in the 1970s, required approximately 10 days to return to their normal, pre-mission condition. It bears noting that a one-way trip to Mars alone would take approximately eight months, using current technology.
If the above statements are true, which of the following must also be true?
A) As long as astronauts receive proper training, they will be at reduced risk of health complications arising from time spent in space.
B) Scientists have not made progress on the development of viable artificial gravity systems.
C) Travel to and from the Moon does not entail significant enough risk to prevent such a mission from occurring.
D) No Mars missions should be scheduled until simulated gravity systems are fully developed.
E) Travel to Mars could adversely affect the health of those undertaking such a journey.
If the above statements are true, which of the following must also be true?
A) As long as astronauts receive proper training, they will be at reduced risk of health complications arising from time spent in space.
B) Scientists have not made progress on the development of viable artificial gravity systems.
C) Travel to and from the Moon does not entail significant enough risk to prevent such a mission from occurring.
D) No Mars missions should be scheduled until simulated gravity systems are fully developed.
E) Travel to Mars could adversely affect the health of those undertaking such a journey.
08 May 2019, 05:07
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Quote:
The correct answer here should be E. The first step with any CR question is to understand what is being asked of you, which in this case is to provide an inference/conclusion that MUST be true on the basis of what premises you've been given. With such questions, the ideal strategy is therefore to eliminate options that can be disproved.
A - The premises given to us make no claims about mitigating the health complications from being in space, much less that this is a guarantee. The option is worded to sound like it can be true, and it quite possibly can. However, it can also be false, which means that we CANNOT say it must be true. OUT
B - We've been given no information about this, so we can't make any claims on this front. This option is tempting and a bit of a trap, since the statement "Extended time in space means extended time in weightlessness" suggests that there are no viable artificial gravity systems in place. However, we know nothing about the progress of development of such systems. Anything is possible, so we can't say that this option must be true. OUT
C - This is quite obviously incorrect, since we know that even travelling to a much closer satellite posed problems. It's highly unlikely that going to the moon would not cause such issues. OUT
D - This option makes a claim about what should be done, and this is often a red herring on Inference CR questions. It's very hard to say for sure that no Mars missions should be scheduled because there's no way to tell what should be done based on this limited information. To use a wild example, climate change could be fast ruining life on Earth, and going to Mars may be the only way to salvage humanity. This may sound absurd, but given the premises, it is still possible. Hence, we cannot say that this (or anything) shouldn't (should) be done unless we literally have all the info. OUT
E - Not only is this claim quite obviously right, the non-extreme nature of it guarantees that it MUST be true. It doesn't say that people will be adversely affected for sure, just that they could be. It is therefore impossible to disprove this claim, since to do so would require us to say that there is NO chance of being adversely affected, and we've been told there certainly is. This answer is therefore CORRECT.
Since the correct answer of an inference question MUST be true, we should always be looking to prove that it CANNOT be false.
- Matoo
12 May 2019, 10:29
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The information in the passage states that Astronauts required 10 days to come to normal after a 28 day stint in space, while a trip to mars will be much much longer.
Therefore, it can be safely inferred that those who would go to Mars would stay in space for a long time and hence would be at a great health risk. Something of this sort is only mentioned in option E.
Therefore, it can be safely inferred that those who would go to Mars would stay in space for a long time and hence would be at a great health risk. Something of this sort is only mentioned in option E.
