From ecosystem to product: Arrange— (a) Furniture, (b) Forest, (c) Wood, (d) Tree.

Introduction / Context:
This is a resource-to-product chain. A forest contains trees; trees yield wood; wood is crafted into furniture.

Given Data / Assumptions:

• Hierarchical containment: forest ⊃ tree.
• Transformation: tree → wood → furniture.

Concept / Approach:
Move from largest natural set to finished product.

Step-by-Step Solution:

Verification / Alternative check:
Matches supply chain logic from raw ecosystem to manufactured goods.

Why Other Options Are Wrong:
They break containment or transformation order.

Common Pitfalls:
Placing furniture before wood.

Final Answer:
(b), (d), (c), (a)