Understanding the passageMeat from chickens contaminated with salmonella bacteria can cause serious food poisoning.• When meat from chickens contaminated with salmonella bacteria is consumed, it can lead to severe food poisoning.
Capsaicin, the chemical that gives chili peppers their hot flavor, has antibacterial properties.
• Capsaicin is a chemical present in chili peppers. It is what gives chili peppers their hot flavor.
• Capsaicin has antibacterial properties.
Chickens do not have taste receptors for capsaicin and will readily eat feed laced with capsaicin.
• Chickens do not have the taste receptors that would help them feel the hot flavor of capsaicin.
• Chickens readily consume feed that is mixed with capsaicin.
When chickens were fed such feed and then exposed to salmonella bacteria, relatively few of them became contaminated with salmonella.
• Chickens are given capsaicin mixed feed so that the antibacterial properties of capsaicin will eliminate the salmonella bacteria.
• When chickens were fed feed mixed with capsaicin and then exposed to salmonella bacteria, it was found that very few of these chickens were contaminated with salmonella.
Since there is no conclusion in the passage, we will analyze the question stem to find the conclusion.
Question: In deciding whether the feed would be useful in raising salmonella-free chicken for retail sale, it would be most helpful to determine which of the following?
The question asks us to pick the options that will help us decide if feed mixed with capsaicin is given to chickens; it will be useful in raising salmonella-free chicken for retail sale.
Conclusion: If feed mixed with capsaicin is given to chickens, it will be useful in raising salmonella-free chicken for retail sale.
Pre-thinkingFalsification ScenarioIn what scenario -
If feed mixed with capsaicin is given to chickens, it will NOT be useful in raising salmonella-free chicken for retail sale.Given that:(i) Meat from chickens contaminated with salmonella bacteria can cause severe food poisoning.
(ii) Capsaicin is a chemical that has antibacterial properties.
(iii) Chickens do not have taste receptors for capsaicin and will readily eat feed laced with capsaicin.
(iv) Among the chickens that consumed feed laced with capsaicin, very few of them showed salmonella contamination.
Thought ProcessChickens with salmonella contamination would not sell because consuming contaminated chicken meat will lead to severe food poisoning. It has been observed that feed mixed with capsaicin, which has antibacterial properties, when given to /chickens, resulted in a reduction in the number of chickens with salmonella contamination. Therefore, the author concludes that raising salmonella-free chickens for sale will be useful.
Falsification condition 1: What if the chicken meat becomes inedible when chickens are raised on feed laced with capsaicin?
In this scenario, if capsaicin in the chicken feed renders the meat inedible, then people who consume chicken meat will not buy salmonella-free chicken, and the retail sale will not increase.
This scenario would break the author's conclusion.
Assumption 1: Feed laced with capsaicin does not alter or degrade the taste of the chicken meat.
Falsification condition 2: What if chickens are already infected with salmonella before feed laced with capsaicin is given to them?
If chickens were contaminated before the feed laced with capsaicin was given to them, then the chickens will not be salmonella free and would not increase the retail sale. Thus, the author's conclusion will break.
Assumption 2: Chickens, which are given feed laced with capsaicin, are not already infected with salmonella.
Answer choice analyses(A) Whether feeding capsaicin to chickens affects the taste of their meat
CORRECT• This option is directly in line with our pre-thinking assumption 1.
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Variance testo Yes - feeding capsaicin to chickens affects the taste of their meat.
o This case weakens our belief in the conclusion.
o No - feeding capsaicin to chickens does not affect the taste of their meat.
o This case strengthens our belief in the conclusion.
(B) Whether eating capsaicin reduces the risk of salmonella poisoning for humans
INCORRECT• This option is irrelevant because the passage is concerned with the effects of capsaicin laced feed on chicken and whether the chickens become salmonella free or not.
(C) Whether chicken is more prone to salmonella contamination than other kinds of meat
INCORRECT• This information will not affect the conclusion. Therefore, this choice is also irrelevant.
(D) Whether appropriate cooking of chicken contaminated with salmonella can always prevent food poisoning
INCORRECT• The passage talks about raising salmonella-free chickens that would be useful for the retail sale of chicken. The cooking of chicken will come after people buy chicken, so this information is out of scope.
(E) Whether capsaicin can be obtained only from chili peppers
INCORRECT• The passage talks about capsaicin that is used for lacing chicken feed. The passage does not specify that capsaicin from chili peppers can only be used to lace chicken feed. Thus, the source of capsaicin is not relevant.