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17 Dec 2025, 05:36
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Important points: 1. Early mammals spent most time in low light
2. Mammals today adapted to dim lighting
3. Bright artificial light likely to interfere with sleep
Exploring the options:
A - Explicitly states that more time in bright light equals irregular sleep, does not specify it as a likely scenario, hence no.
B - No difference given between artificial or natural light effects in the biologist's statement, hence no.
C - Sleep cycle depends, at least in part, on environmental conditions as stated by biologist giving example of lighting conditions, hence likely answer
D - No mentions of healthier sleep anywhere in the paragraph, hence no
E - Intensity of light is nowhere mentioned in the paragraph, hence no.
Answer C
2. Mammals today adapted to dim lighting
3. Bright artificial light likely to interfere with sleep
Exploring the options:
A - Explicitly states that more time in bright light equals irregular sleep, does not specify it as a likely scenario, hence no.
B - No difference given between artificial or natural light effects in the biologist's statement, hence no.
C - Sleep cycle depends, at least in part, on environmental conditions as stated by biologist giving example of lighting conditions, hence likely answer
D - No mentions of healthier sleep anywhere in the paragraph, hence no
E - Intensity of light is nowhere mentioned in the paragraph, hence no.
Answer C
17 Dec 2025, 05:39
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IMO C
If we negate choice C, it says that modern animal sleep cycle do not depend on enviromental conditions to which mammals are truly adapted.
see, the whole argument falls apart when we negate that choice, hence we must assume that sleep cycles are still affected by enviromental conditions mammals are biologically adapted to.
A. Its too specific, doesn't work, out of scope basically.
B. It brings something that's outside of argument, comparison between artificial and natural light, not needed for the argument.
D. Historical sleep quality is out of scope, irrelevant.
E. I was initially confused to choose this but then I realised that intensity comparision is fruitless, disruption could also occur at lower intensities, basically we need to assume a lot for this to be correct.
If we negate choice C, it says that modern animal sleep cycle do not depend on enviromental conditions to which mammals are truly adapted.
see, the whole argument falls apart when we negate that choice, hence we must assume that sleep cycles are still affected by enviromental conditions mammals are biologically adapted to.
A. Its too specific, doesn't work, out of scope basically.
B. It brings something that's outside of argument, comparison between artificial and natural light, not needed for the argument.
D. Historical sleep quality is out of scope, irrelevant.
E. I was initially confused to choose this but then I realised that intensity comparision is fruitless, disruption could also occur at lower intensities, basically we need to assume a lot for this to be correct.
Bunuel
17 Dec 2025, 06:02
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I was confused between A and C but ultimately choose C since if we negate C Modern mammals sleep cycles does not depend on environment condition that will collapse the complete argument
