Classification — product/derivative vs unrelated relation: Choose the odd pair: Death : Disease, Milk : Butter, Grape : Wine, Water : Oxygen.

Introduction / Context:
Three pairs show a “source → product/derivative” relation. One pair does not: it depicts an outcome/effect relation unrelated to production/derivation.

Given Data / Assumptions:

• Milk → Butter (product by churning/processing).
• Grape → Wine (fermentation product).
• Water → Oxygen (not a direct product; oxygen is an element in water, but water does not produce oxygen without decomposition/electrolysis).
• Death : Disease reflects disease causing death (effect), not product formation.

Concept / Approach:
Prefer the straightforward “made-from” lens: butter from milk; wine from grapes. Among the remaining, which pair fails a clean production mapping most clearly?

Step-by-Step Solution:
1) Identify production pairs: Milk→Butter and Grape→Wine.2) Water→Oxygen is not a normal product relation; oxygen is a component element released only via chemical decomposition.3) Death→Disease is effect-of, not product-of. Among non-production pairs, it is the clearest mismatch to the majority pattern, hence the odd pair.

Verification / Alternative check:
Ask: can we say “X is made from Y” naturally? Yes for milk/butter and grape/wine, not for death/disease.

Why Other Options Are Wrong:
They either directly show product formation or (in the case of water/oxygen) could be misconstrued as compositional; the blatant non-production is death/disease.

Common Pitfalls:
Confusing constituent elements with products; “oxygen” is in water, but water does not normally yield oxygen as a product in everyday contexts.

Final Answer:
Death : Disease