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14 Jul 2026, 05:46
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A This would predict more eggs in scraped sections, not fewer, so this contradicts the finding and doesn't explain it.
B Correct. The fewer eggs could be because the surface was damaged by the scraping process, not because algae helps.
C This supports the researchers' conclusion, not undermines it.
D Even if true, the study measured intact eggs, and the difference was significant.
E It doesn't explain why the scraped sections had fewer eggs.
IMO B
B Correct. The fewer eggs could be because the surface was damaged by the scraping process, not because algae helps.
C This supports the researchers' conclusion, not undermines it.
D Even if true, the study measured intact eggs, and the difference was significant.
E It doesn't explain why the scraped sections had fewer eggs.
IMO B
14 Jul 2026, 05:51
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The argument says that the researchers observed that reef sections with algae removed had fewer intact fish eggs. And conclusion was that Algae helps fish reproduce by providing attachments sites and attachments.
The researchers assumed that the only difference between the two sets is the presence or absence of algae.
To undermine the conclusion we lets evaluate the options:
A. Suggests that Fish prefer bare surfaces but doesnt explain the experimental result. (Incorrect)
B. This seems appealing because it kind off says that the fish laid fewer eggs because surface was damaged and not because algae was absent. Works as a weakener. (Correct).
C. Strengthens the conclusion. (Incorrect).
D. This questions the measures of success, not the reason for fewer eggs. Insufficient and Incorrect
E. Long term algae growth is irrelevant to the experiment. (Incorrect)
IMO ans is B.
The researchers assumed that the only difference between the two sets is the presence or absence of algae.
To undermine the conclusion we lets evaluate the options:
A. Suggests that Fish prefer bare surfaces but doesnt explain the experimental result. (Incorrect)
B. This seems appealing because it kind off says that the fish laid fewer eggs because surface was damaged and not because algae was absent. Works as a weakener. (Correct).
C. Strengthens the conclusion. (Incorrect).
D. This questions the measures of success, not the reason for fewer eggs. Insufficient and Incorrect
E. Long term algae growth is irrelevant to the experiment. (Incorrect)
IMO ans is B.
Bunuel
14 Jul 2026, 06:08
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The answer is B because the researchers assume the only relevance difference between the two group groups is the presence or absence of algae, B introduces
A confound created by the method itself. Scraping did not just remove algae, it damaged the substrate underneath. So the scraped sections may have had fewer X because the surface was wrecked, not because the algae was missing. That breaks the casual link the conclusion depends on.
Quick eliminations. A contradict the observed data, since if fish, preferred bare surfaces. The scraped sections would have had more eggs, not fewer. C supports the conclusion rather than undermining it. D shifts to a different measure, but does not explain a way the gap in the intact eggs. E it’s about long-term harm from algae and it’s irrelevant to whether algae aids egg-laying there.
A confound created by the method itself. Scraping did not just remove algae, it damaged the substrate underneath. So the scraped sections may have had fewer X because the surface was wrecked, not because the algae was missing. That breaks the casual link the conclusion depends on.
Quick eliminations. A contradict the observed data, since if fish, preferred bare surfaces. The scraped sections would have had more eggs, not fewer. C supports the conclusion rather than undermining it. D shifts to a different measure, but does not explain a way the gap in the intact eggs. E it’s about long-term harm from algae and it’s irrelevant to whether algae aids egg-laying there.
Bunuel
