PrepTest 155

Incorrect. The stimulus doesn't talk about the specific development of newly formed neurons in any area other than the striatum, so this answer is out of scope.

Incorrect. The stimulus doesn't talk about the timeline for injuries and newly forming neurons, so this answer is out of scope.

Incorrect. The stimulus doesn't talk about the composition of brain parts other than the striatum, so this answer is out of scope.

Correct. Argument or Facts:
Facts

Question Type:
Must Be True

Stimulus Summary:
Newly formed neurons help heal → Develop into most common type in area
The most common type of neuron in the striatum is midsized spiny neurons, but newly formed neurons there never become that type.

Answer Anticipation:
The conditional rule tells us that if newly formed neurons don't develop into the most common type in an injured area, then they won't help heal the brain. In this one area (the striatum), newly formed neurons don't develop into the most common type. Putting those two statements together, we can conclude that the striatum isn't healed by newly formed neurons.

Answer Explanation:
This answer reflects our anticipation. By putting the fact together with the conditional statement, we can support this answer.

Key Takeaway:
When a conditional statement is given in the stimulus of a Must Be True question, the correct answer will almost always deal with it in some manner.

Incorrect. While we know that newly formed neurons don't help heal injuries to the striatum, there's no information about how frequently injuries to that area occur versus other areas, so we can't support this answer.