Answer: Third option is correct.
Explanation:
Undefined terms are those words which exists without any definition.
Postulates are those accepted statements of fact which do not need any proof.
Definitions are the statements which are derived from postulates so, it does not need proof.
Theorems are the statements that is proved by utilising deductive reasoning.
As it uses definitions, postulates and undefined terms to prove it correct.
Hence, Third option is correct.