Arrange substances by typical perceived value or rarity in ascending order: Items: (a) Gold (b) Iron (c) Sand (d) Diamond Choose the correct lowest-to-highest sequence.

Introduction / Context:
This checks general knowledge of common-to-precious materials in ascending value.

Given Data / Assumptions:

• Sand (c): abundant, low value per unit.
• Iron (b): industrial metal, more valuable than sand but common.
• Gold (a): precious metal, high value.
• Diamond (d): precious gemstone, typically highest value.

Concept / Approach:
Sort by typical scarcity/market value in everyday contexts.

Step-by-Step Solution:

Verification / Alternative check:
Consider abundance and pricing; ordering aligns with common perceptions.

Why Other Options Are Wrong:
They misplace precious items relative to common materials.

Common Pitfalls:
Special industrial diamond vs gemstone; the question asks general value, not niche cases.

Final Answer:
c, b, a, d