Geological size/aggregation order: Arrange Sand, Stone, Rock, Boulder, Hill in ascending order from smallest granular unit to largest formation.

Introduction / Context:
From grains to landforms, geological entities can be ordered by typical size/aggregation. This tests practical world knowledge.

Given Data / Assumptions:

• Items: Sand (granular), Stone (small rock piece), Rock (larger mass), Boulder (very large detached rock), Hill (landform).

Concept / Approach:
Order by increasing size: grains → small pieces → large rock masses → landforms.

Step-by-Step Solution:
Sand (finest particles).Stone (small piece).Rock (general larger mass).Boulder (very large single rock).Hill (terrain feature).

Verification / Alternative check:
Everyday usage and geological terminology agree broadly with this scale progression.

Why Other Options Are Wrong:
They place a landform amid granular materials or invert natural size relations.

Common Pitfalls:
Equating stone with rock interchangeably; here we use relative typical sizes.

Final Answer:
Sand, Stone, Rock, Boulder, Hill