Step 1: Understanding the Term Hypothesis
- A hypothesis is a proposed explanation made on the basis of limited evidence.
- It is subject to testing and validation.
Step 2: Why Not Other Options?
- An axiom is a self-evident truth.
- A model represents a system but does not imply a supposition.
- A postulate is an assumed truth without proof.
Step 3: Conclusion
Since a hypothesis is a supposition without assuming it is true, Option (1) is correct.