The question below consists of a set of labelled sentence parts X, Y, and Z. Out of the four options given, select the most logical order of the parts to form a coherent and grammatically correct sentence beginning with "The causes and their".

Introduction / Context:
This is another jumbled sentence question that requires you to arrange labelled parts into a meaningful and grammatically accurate statement about causes and effects. Such items test your grasp of logical relationships and typical English sentence patterns involving phrases like "belong to" and "stand in one order."

Given Data / Assumptions:

• The fixed beginning is: "The causes and their".
• The labelled parts are: X: in the same series Y: one order, they stand Z: effects belong to the
• We must select from the orders ZXY, YZX, YXZ, and ZYX.

Concept / Approach:
The phrase "causes and their effects" is a natural pair in English. After "The causes and their," the next word should reasonably be "effects," which appears in part Z. The verb phrase "belong to the same series" also fits together, and "they stand in one order" is an additional clause describing the relation. So we need an order that preserves these natural groupings and produces a smooth, logical statement.

Step-by-Step Solution:
Step 1: Start with "The causes and their" as given. Step 2: The next part that completes the noun phrase is Z: "effects belong to the." Step 3: After Z, part X, "in the same series," continues the idea: "effects belong to the same series." Step 4: Finally, Y, "one order, they stand," completes the sentence: "in the same series, one order, they stand." Step 5: Put together, the complete sentence reads: "The causes and their effects belong to the same series; in one order, they stand."

Verification / Alternative check:
Test other available orders. If you try ZYX, for example, you would get "effects belong to the one order, they stand in the same series," which sounds awkward and disturbs the usual phrase "in the same series." YZX would start "one order, they stand effects belong to the," which is clearly incorrect. The only order that preserves natural collocations is Z X Y.

Why Other Options Are Wrong:

• YZX: Begins with "one order, they stand," which cannot logically follow "The causes and their" without the noun "effects."
• YXZ: Creates the wrong grouping of words and breaks the phrase "belong to the same series."
• ZYX: Misplaces "in the same series," attaching it to "one order, they stand" in a clumsy and less meaningful way.

Common Pitfalls:
Many candidates ignore fixed expressions like "belong to the same series" and instead try to force an order that simply sounds acceptable. Always look for standard language patterns such as "effects belong to" and prepositional phrases like "in the same series." These clues guide you toward the correct sequence of parts.

Final Answer:
The most logical order of the sentence parts is ZXY, giving the sentence: The causes and their effects belong to the same series; in one order, they stand.