Select the best related pair: Evaporation is to Cloud as which of the following pairs shows a similar cause to result relationship?

Introduction / Context:
This analogy explores cause and effect in physical and emotional processes. Evaporation is a process in the water cycle that contributes to the formation of clouds. The question asks you to select a pair where the first word is a cause and the second word is a likely result in a similar way. Understanding such cause effect analogies is important in both science and reasoning questions.

Given Data / Assumptions:
1) Evaporation is the process by which liquid water turns into water vapour due to heat.
2) Water vapour from evaporation rises and, together with condensation, leads to the formation of clouds in the atmosphere.
3) The options are Mountain : Snow, Book : Pages, Pressure : Atmosphere, and Tension : Breakdown.
4) We need to identify a pair where the first term is a contributing cause and the second term is a resulting state or event, parallel to evaporation leading to clouds.

Concept / Approach:
The relationship in the model pair is Process to Outcome. Evaporation, together with other processes, results in clouds. Among the options, Tension : Breakdown follows a similar pattern: emotional or mental tension can lead to a breakdown. Other options either reverse this relation or describe different types of association that do not fit the same cause effect pattern.

Step-by-Step Solution:
Step 1: Restate the original pair. Evaporation of water helps produce clouds in the sky as part of the water cycle. Step 2: Examine option a, Mountain : Snow. Mountains may have snow on them, but mountain does not cause snow in the way evaporation causes clouds. Snow falls due to atmospheric conditions, not because of the mountain itself. Step 3: Examine option b, Book : Pages. Pages are components of a book, so this pair shows a part whole relationship rather than cause effect. Step 4: Examine option c, Pressure : Atmosphere. Atmosphere exerts pressure, so the relation is more like source to property or environment to effect, and the order is not clearly cause to outcome as in evaporation and cloud. Step 5: Examine option d, Tension : Breakdown. Psychological or emotional tension can result in a breakdown, such as a mental breakdown or nervous collapse. Step 6: Identify Tension : Breakdown as the pair with a clear cause leading to a significant negative effect, mirroring the process to result structure of Evaporation : Cloud.

Verification / Alternative check:
Construct parallel statements. Evaporation leads to cloud formation, and tension leads to breakdown. These sentences both describe how one process contributes to a particular outcome. The other options either describe location relationships or composition relationships, not cause and result. This confirms option d as correct.

Why Other Options Are Wrong:
Mountain : Snow suggests snow on a mountain, which is a place to feature relationship. Book : Pages is a whole to parts relation. Pressure : Atmosphere is ambiguous and does not mirror the one directional process outcome framework. None of them fit the clear cause effect structure that defines the original pair.

Common Pitfalls:
Candidates might choose Mountain : Snow because of the natural association between high mountains and snow, but that is more about typical co occurrence than direct causation. The question is stricter and expects a process that results in a specific state, which is mirrored best by tension causing breakdown.

Final Answer:
The correct related pair is Tension : Breakdown, reflecting the same cause effect relation as Evaporation : Cloud.