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01 Jun 2026, 14:45
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Heavy consumption of alcohol causes impaired judgment, a loss of fine motor skills, slower reaction times, a decrease in visual acuity, and other short-term symptoms. Since alcohol can be metabolized in the average person’s body at a rate of 0.015 BAC (or “blood alcohol content”) per hour, a severely intoxicated individual with a BAC of 0.15 should be symptom-free after 10 hours. After this time, if the individual exhibits similar symptoms, such symptoms cannot be caused by alcohol.
Which of the following, if true, most seriously weakens the conclusion above?
(A) Some symptoms normally associated with alcohol consumption may resemble symptoms caused by prescription drugs or even drowsiness.
(B) Increases in BAC are based on the amount of alcohol consumed rather than the number of drinks (some drinks contain more alcohol than others).
(C) Heavy alcohol consumption has numerous long term effects such as cirrhosis of the liver, stomach ulcers, and birth defects.
(D) The metabolic rate of alcohol varies according to a person’s health, weight, diet, and genetic predispositions.
(E) Some people, due to an acute sensitivity to alcohol, cannot even reach a BAC of 0.15 before becoming violently ill.
The OA will be automatically revealed on Tuesday 2nd of June 2026 02:45:39 PM Pacific Time Zone
Which of the following, if true, most seriously weakens the conclusion above?
(A) Some symptoms normally associated with alcohol consumption may resemble symptoms caused by prescription drugs or even drowsiness.
(B) Increases in BAC are based on the amount of alcohol consumed rather than the number of drinks (some drinks contain more alcohol than others).
(C) Heavy alcohol consumption has numerous long term effects such as cirrhosis of the liver, stomach ulcers, and birth defects.
(D) The metabolic rate of alcohol varies according to a person’s health, weight, diet, and genetic predispositions.
(E) Some people, due to an acute sensitivity to alcohol, cannot even reach a BAC of 0.15 before becoming violently ill.
The OA will be automatically revealed on Tuesday 2nd of June 2026 02:45:39 PM Pacific Time Zone
BongBideshini
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01 Jun 2026, 20:00
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The author calculates the 10-hour timeframe based on the metabolic rate of the average person (0.015 BAC per hour). However, the conclusion makes an absolute claim about a specific individual: that after 10 hours, their symptoms cannot possibly be caused by alcohol. If metabolism varies from person to person, a specific individual might metabolize alcohol much slower than the average. If it takes them 15 hours to metabolize a 0.15 BAC, then their symptoms at hour 11 absolutely could still be caused by alcohol, destroying the author's conclusion.
(A) Some symptoms normally associated with alcohol consumption may resemble symptoms caused by prescription drugs or even drowsiness.
If the symptoms after 10 hours are actually caused by prescription drugs or drowsiness rather than alcohol, this would actually support (or strengthen) the conclusion that alcohol is not the cause. A weaken question requires you to prove that alcohol could still be the cause.
(B) Increases in BAC are based on the amount of alcohol consumed rather than the number of drinks (some drinks contain more alcohol than others).
The argument already establishes that the individual is starting at a BAC of 0.15. How they arrived at that specific BAC (whether through a few strong drinks or many weak ones) is completely irrelevant to how long it takes the body to process it afterward.
(C) Heavy alcohol consumption has numerous long term effects such as cirrhosis of the liver, stomach ulcers, and birth defects.
The argument and the conclusion are strictly focused on the presence of the "short-term symptoms" mentioned in the first sentence (impaired judgment, loss of fine motor skills, etc.). Long-term diseases do not explain why a person would still be exhibiting those specific short-term impairment symptoms exactly 10 hours later.
(D) The metabolic rate of alcohol varies according to a person’s health, weight, diet, and genetic predispositions.
This directly attacks the assumption that every individual processes alcohol at the exact mathematical average of 0.015 BAC per hour. If a person metabolizes alcohol slower than average, they will still have alcohol in their system after 10 hours, meaning their symptoms could indeed still be caused by alcohol.
(E) Some people, due to an acute sensitivity to alcohol, cannot even reach a BAC of 0.15 before becoming violently ill.
The premise explicitly asks us to consider "a severely intoxicated individual with a BAC of 0.15. " What happens to people who cannot reach that level is outside the scope of the argument.
Ans D
(A) Some symptoms normally associated with alcohol consumption may resemble symptoms caused by prescription drugs or even drowsiness.
If the symptoms after 10 hours are actually caused by prescription drugs or drowsiness rather than alcohol, this would actually support (or strengthen) the conclusion that alcohol is not the cause. A weaken question requires you to prove that alcohol could still be the cause.
(B) Increases in BAC are based on the amount of alcohol consumed rather than the number of drinks (some drinks contain more alcohol than others).
The argument already establishes that the individual is starting at a BAC of 0.15. How they arrived at that specific BAC (whether through a few strong drinks or many weak ones) is completely irrelevant to how long it takes the body to process it afterward.
(C) Heavy alcohol consumption has numerous long term effects such as cirrhosis of the liver, stomach ulcers, and birth defects.
The argument and the conclusion are strictly focused on the presence of the "short-term symptoms" mentioned in the first sentence (impaired judgment, loss of fine motor skills, etc.). Long-term diseases do not explain why a person would still be exhibiting those specific short-term impairment symptoms exactly 10 hours later.
(D) The metabolic rate of alcohol varies according to a person’s health, weight, diet, and genetic predispositions.
This directly attacks the assumption that every individual processes alcohol at the exact mathematical average of 0.015 BAC per hour. If a person metabolizes alcohol slower than average, they will still have alcohol in their system after 10 hours, meaning their symptoms could indeed still be caused by alcohol.
(E) Some people, due to an acute sensitivity to alcohol, cannot even reach a BAC of 0.15 before becoming violently ill.
The premise explicitly asks us to consider "a severely intoxicated individual with a BAC of 0.15. " What happens to people who cannot reach that level is outside the scope of the argument.
Ans D
Bunuel
01 Jun 2026, 22:32
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conclusion= after 10 hrs. if person exhibits similar symptoms, such symptoms cant be caused by alcohol.
A this somewhat strengthened the conclusion here. this choice gives more reason in believing in conclusion more. so reject.
B this is complete irrelevant. we dont need to know how the BAC increases. whether through the number of glasses or amount of alcohol. reject.
C yeah, we all know this. so thats why we should stay away from alcohol. not of much help from here, reject.
D perfect. if metabolic rate of each person varies then we cant make this conclusion with utmost guarantee. there could be people who can metabolize the alcohol at much lower speed than others, so they will still have symptoms left even after 10 hrs. so this does enough to attack the conclusion. keep.
E unnecessary. reject.
Ans D
A this somewhat strengthened the conclusion here. this choice gives more reason in believing in conclusion more. so reject.
B this is complete irrelevant. we dont need to know how the BAC increases. whether through the number of glasses or amount of alcohol. reject.
C yeah, we all know this. so thats why we should stay away from alcohol. not of much help from here, reject.
D perfect. if metabolic rate of each person varies then we cant make this conclusion with utmost guarantee. there could be people who can metabolize the alcohol at much lower speed than others, so they will still have symptoms left even after 10 hrs. so this does enough to attack the conclusion. keep.
E unnecessary. reject.
Ans D
Bunuel
