Geographical formation scale (smallest to largest): Arrange — a. ROCK, b. HILL, c. MOUNTAIN, d. RANGE, e. STONE.

Introduction / Context:
This problem orders physical formations by scale. We move from the smallest discrete object to the largest regional feature.

Given Data / Assumptions:

• Items: STONE, ROCK, HILL, MOUNTAIN, RANGE.
• Order required: increasing size/extent.

Concept / Approach:
A stone is a small piece of rock; a rock is larger than a stone but remains a single object. Multiple hills/mountains form a range. Thus we scale up naturally.

Step-by-Step Solution:

Verification / Alternative check:
Consistent with geomorphology terminology: ranges are aggregations of mountains/hills.

Why Other Options Are Wrong:
They invert the containment/scale relationship.

Common Pitfalls:
Confusing rock vs stone usage; placing “range” before “mountain”.

Final Answer:
e, a, b, c, d