“River” is to “Ocean” as a smaller path of flow is to a larger path of flow. Choose the pair that best mirrors this narrower-to-broader pathway relationship.

Introduction / Context:
Geographical analogies often model containment or convergence. Rivers flow into oceans; similarly, local narrow routes feed into broader thoroughfares. We must select the transportation analogue that preserves “smaller channel → larger channel.”

Given Data / Assumptions:

• River → Ocean (narrower natural flow → broader body).
• We seek “smaller route → larger route.”

Concept / Approach:
“Lane : Road” is the closest structural match: a lane is narrower and often connects to or forms part of a broader road network. Other options are inclusion/association relations but not channel-size progressions (e.g., book → library is item → collection; child → school is participant → institution; cloth → body is covering → object).

Step-by-Step Solution:
1) Abstract the relation as narrower pathway feeds into broader one.2) Map to transport infrastructure.3) Choose “Lane : Road.”

Verification / Alternative check:
Transportation planning treats lanes/streets as lower hierarchy linking into arterial roads, paralleling tributaries into main channels.

Why Other Options Are Wrong:

• Child : School: Person → institution; not a pathway hierarchy.
• Book : Library: Item → collection; not channel-size relation.
• Cloth : Body: Covering relation; unrelated to flow/hierarchy.

Common Pitfalls:
Confusing general containment with directional flow or hierarchy.

Final Answer:
Lane : Road