Plant organs — arrange structural parts from foundational to reproductive: (a) Leaf (b) Stem (c) Root (d) Flower

Introduction / Context:
Order plant organs in a conceptual development chain.

Given Data / Assumptions:
Root → Stem → Leaf → Flower.

Concept / Approach:
Roots establish uptake, stems support and conduct, leaves photosynthesize, and flowers reproduce.

Step-by-Step Solution:
Root (c) → Stem (b) → Leaf (a) → Flower (d).

Verification / Alternative check:
School-level botany supports this order.

Why Other Options Are Wrong:
They invert foundational organs or place flower too early.

Common Pitfalls:
Assuming leaves precede stems.

Final Answer:
c, b, a, d