The accurate representation of the distinguishing features of the terms is:
A postulate is assumed to be true, and it does not have to be proven.
To clarify:
- Postulates (or axioms) are basic assumptions accepted without proof.
- Theorems are statements that are proven based on postulates, definitions, and previously established theorems.
- Conjectures are statements that are proposed as true, but have not yet been proven.
- Definitions provide precise meanings of terms and clarify concepts, but do not describe observational statements.
So the only correct choice among the responses given is about postulates.