Logical reasoning PrepTest 155 · Section 4 · Question 16

Incorrect. While one potential objection has been addressed, this answer is too strong and expansive by stating that there is no reason for opposing the use of BST. Maybe there's another legitimate reason that could be raised.

Incorrect. While the stimulus states that there is one potentially harmful substance that milk is screened for, there's no indication that there are no other harmful substances that could end up in BST milk. This answer is too strong in saying that the two types of milk are as safe as each other.

Incorrect. While there are pros and cons, it's too strong to state that there's no advantage to the use of BST. If anything, the stimulus suggests that the pros outweigh the cons.

Correct. Argument or Facts:
Facts

Question Type:
Must Be True

Stimulus Summary:
Farmers give milk cows a hormone to make more milk, which is nutritionally identical to untreated cows.

Consumers protest this, because these cows have a higher risk of infection, which means they're more likely to get antibiotics, which could end up in the milk and are harmful at high levels.

Hormone cow milk is screened for antibiotics.

Answer Anticipation:
In this stimulus, an objection is raised, but that objection is addressed. The correct answer will probably reflect that this is the case, and that the consumers' fears are overblown.

Answer Explanation:
While this answer is strong, there is support for it, especially since the answer only says that the milk "can be presumed" to be safe, not that it actually is safe. Since the stimulus states that antibiotics might end up in the BST milk, and that they can be harmful, we can only presume the milk is safe (i.e., know that it doesn't have harmful levels of antibiotics) if it's screened for that. It might be safe without screening, but we can't presume that.

Key Takeaway:
When an answer in a Must Be True question has strong language, make sure that it doesn't undercut that strength with weaker language. Here, the "only if" is undercut by the "presumed" language, creating an answer that is supported.

Incorrect. This answer is too strong in stating that antibiotics are the only threat. The stimulus doesn't state that there are no other changes to this milk; just that the nutritional value is equivalent. Maybe there's a non-nutritive danger in the BST milk other than antibiotics.