The question below consists of a set of labelled sentence fragments. Out of the four options given, select the most logical order of the fragments to form a coherent sentence: The resulting brain change is X concomitant of Y the sensation Z regarded as the true.

Introduction / Context:
This sentence arrangement question presents three labelled fragments that must be ordered to produce a clear and meaningful sentence about brain changes and sensations. Such para-jumble questions assess your understanding of academic style statements and your ability to reconstruct complex sentences logically. Here, the goal is to identify the correct sequence to describe how a brain change is regarded in relation to a sensation.

Given Data / Assumptions:

• The fixed part is "The resulting brain change is".
• The fragments are: X: concomitant of Y: the sensation Z: regarded as the true
• We need to arrange X, Y, and Z after the fixed part to form a single clear sentence.
• The sentence likely intends to say that the brain change is regarded as the true concomitant of the sensation.
• The options offer different permutations of these three fragments.

Concept / Approach:
We start by identifying which fragment can follow the verb "is". Fragment Z begins with "regarded as the true", which naturally follows "is" to form "is regarded as the true...". This suggests Z should come first. Next, we need to explain what it is regarded as the true version of. The phrase "concomitant of the sensation" is a near-technical expression meaning the accompanying phenomenon of the sensation. To build that phrase, X "concomitant of" must come before Y "the sensation". So the final full sentence is "The resulting brain change is regarded as the true concomitant of the sensation", corresponding to the order Z–X–Y, that is ZXY.

Step-by-Step Solution:
Step 1: Begin with the given start: "The resulting brain change is". A complement of "is" should follow, typically an adjective or passive construction. Step 2: Fragment Z reads "regarded as the true", which fits perfectly after "is": "is regarded as the true...". Step 3: After "the true", the sentence needs a noun phrase describing what the brain change is considered to be. The phrase "concomitant of the sensation" makes sense: something that accompanies the sensation. Step 4: To form this noun phrase, place X "concomitant of" before Y "the sensation". This yields "concomitant of the sensation". Step 5: Combine all parts: "The resulting brain change is regarded as the true concomitant of the sensation." Step 6: Note that the fragment order used is Z, then X, then Y. Step 7: Check the options and choose the one corresponding to ZXY.

Verification / Alternative check:
Now test other possible orders. If we begin with X after "is", we get "is concomitant of", which is grammatical but leaves "regarded as the true" to be placed awkwardly later, for example "concomitant of the sensation regarded as the true", which is clumsy and incomplete. Starting with Y "the sensation" would lead to "is the sensation regarded as the true concomitant of" which also sounds unnatural. Only the order ZXY produces a smooth, scholarly sentence that clearly conveys that the brain change is considered the true accompaniment of the sensation.

Why Other Options Are Wrong:
"YZX": "is the sensation regarded as the true concomitant of" gives the impression that the sensation is the subject of the clause, which contradicts the given starting subject "The resulting brain change". "YXZ": "is the sensation concomitant of regarded as the true" is grammatically broken and incomprehensible. "XZY": "is concomitant of regarded as the true the sensation" scrambles the logical order and separates related words. Any arrangement that does not keep "concomitant of the sensation" together will sound unnatural and fail to convey the intended meaning.

Common Pitfalls:
Learners sometimes treat all fragments as equally likely to start or end the clause and guess based on partial meaning. However, looking carefully at grammatical clues such as passive structures ("is regarded") and prepositional phrases ("of the sensation") makes it easier to see which sequences are valid. Paying attention to typical English patterns like "regarded as" and "concomitant of" will guide you to the smoothest and most logical ordering.

Final Answer:
The best order of the fragments is ZXY, giving the sentence "The resulting brain change is regarded as the true concomitant of the sensation".