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16 Dec 2025, 07:35
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The statement indicates that higher the age, lower the chances that the doctor would make an avoidable mistake.
A - Does not mention the lower rate of error in doctors aged 60 and above, hence no
B - If doctors aged 60 and above are lower in proportion, the results of the study become biased and the conclusion could not be drawn, hence no
C - If doctors aged 60 and above perform lower risk surgeries, the study would not be fair to younger doctor, conclusion could not be drawn, hence no
D - Doctors aged 60 and above do not treat lower number of patients than younger doctors, this would give an equal playing ground for the survey, hence this would be the best option
E - The statement given is the conclusion that is drawn and not an assumption, hence no
A - Does not mention the lower rate of error in doctors aged 60 and above, hence no
B - If doctors aged 60 and above are lower in proportion, the results of the study become biased and the conclusion could not be drawn, hence no
C - If doctors aged 60 and above perform lower risk surgeries, the study would not be fair to younger doctor, conclusion could not be drawn, hence no
D - Doctors aged 60 and above do not treat lower number of patients than younger doctors, this would give an equal playing ground for the survey, hence this would be the best option
E - The statement given is the conclusion that is drawn and not an assumption, hence no
16 Dec 2025, 07:52
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The statistic cited is the percentage of doctors who made at least one error, not an error rate per procedure. If older doctors treat many fewer patients, they would naturally be less likely to commit at least one error.
A Not required. The argument does not rely on explaining differences among younger doctors.
B Irrelevant. Group size does not affect percentages.
C Concerns riskiness of circumstances, but even without riskier cases, fewer patients alone could explain the result.
D Required assumption: if older doctors treated far fewer patients, the conclusion about greater reliability would be undermined.
E Merely restates the given data.
Answer D
A Not required. The argument does not rely on explaining differences among younger doctors.
B Irrelevant. Group size does not affect percentages.
C Concerns riskiness of circumstances, but even without riskier cases, fewer patients alone could explain the result.
D Required assumption: if older doctors treated far fewer patients, the conclusion about greater reliability would be undermined.
E Merely restates the given data.
Answer D
16 Dec 2025, 08:14
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Because a smaller percentage of doctors aged 60+ made at least one avoidable error, the argument concludes that they are more reliable, due to experience and caution.
A This talks only about differences within younger groups. The argument does not rely on explaining those differences, so this is not required.
B Group size does not matter because the argument uses percentages, not raw numbers. This is irrelevant.
C If anything, this would undermine the conclusion rather than support it. The argument does not assume this.
D This is crucial. If older doctors see far fewer patients, they would naturally be less likely to make at least one error, even if they are not more reliable per procedure.
E It adds nothing necessary to the reasoning.
The answer is D
A This talks only about differences within younger groups. The argument does not rely on explaining those differences, so this is not required.
B Group size does not matter because the argument uses percentages, not raw numbers. This is irrelevant.
C If anything, this would undermine the conclusion rather than support it. The argument does not assume this.
D This is crucial. If older doctors see far fewer patients, they would naturally be less likely to make at least one error, even if they are not more reliable per procedure.
E It adds nothing necessary to the reasoning.
The answer is D
