Step 1: Define the terms.
- Axiom: A self-evident truth or basic assumption.
- Conceptual scheme: A framework linking concepts.
- When such a framework is explicitly built on axioms, it becomes an analytical model — a set of relationships derived logically from basic assumptions.
Step 2: Rule out other options.
- (a) Objective evidence refers to verifiable facts, not assumption-based frameworks.
- (b) Theory is a broader, empirically supported explanation — may be built from models, but here the key is axioms ⇒ model.
- (d) “None of these” is wrong because “analytical model” fits exactly.
\[
\boxed{(c)}
\]