Arrange the parts of the water flow cycle from precipitation to the largest water body. 1. Rivulet 2. Ocean 3. Tributory (tributary) 4. River 5. Sea 6. Rain

Introduction / Context:
This ordering follows a simple surface-water path from rainfall to ocean through progressively larger channels.

Given Data / Assumptions:

• Rain feeds small streams (rivulets).
• Rivulets join to form tributaries.
• Tributaries feed rivers.
• Rivers often empty into seas, which connect to oceans.

Concept / Approach:
Order by scale of flow: precipitation → micro-channels → tributaries → main river → sea → ocean.

Step-by-Step Solution:
6 Rain.1 Rivulet (small stream).3 Tributory (tributary).4 River (main channel).5 Sea (marginal basin).2 Ocean (global basin).

Verification / Alternative check:
The scale increases at each step; reversing sea and ocean would be incorrect in this path.

Why Other Options Are Wrong:
Orders that start with sea/ocean ignore precipitation; those that jump from rain directly to river miss intermediate channels.

Common Pitfalls:
Spelling “tributory/tributary”; ensure understanding that many rivers flow into seas before the ocean.

Final Answer:
6 1 3 4 5 2