Classification – Odd one out (spread-related terms vs unrelated meaning): Pick the item that does not fit with spreading/distribution concepts: Dilution, Distribution, Dispersion, Diversion.

Introduction / Context:
In science and statistics, several terms describe how something spreads or is shared out. Three of the options relate to either weakening by spreading (dilution) or to dispersing/sharing across space or categories (distribution, dispersion). One instead refers to rerouting or distraction, not spread—yielding a clean outlier.

Given Data / Assumptions:

• Dilution: reducing concentration by adding more solvent—effectively spreading solute over a larger volume.
• Distribution: allocation/spread of items or values across categories or space (also a statistical term).
• Dispersion: degree or act of spreading out; in stats, measures like variance quantify dispersion.
• Diversion: redirecting attention/flow; entertainment; detour—conceptually not “spread.”

Concept / Approach:
Focus on semantic core: spread/weaken vs reroute/distract. The latter meaning does not align with the others.

Step-by-Step Solution:
Dilution → about spreading solute (lowering concentration).Distribution → about spreading/allocating.Dispersion → about spreading/scatter.Diversion → about changing course/attention (not spreading).

Verification / Alternative check:
All four share a “di-” prefix but that is superficial; semantic cores differ, and only Diversion lacks the spread concept.

Why Other Options Are Wrong:

• Dilution, Distribution, Dispersion: each centrally involves “spreading,” either physically or conceptually.

Common Pitfalls:
Letting prefixes drive classification instead of meanings.

Final Answer:
Diversion