Step 1: Understanding the Concept:
"Onus probandi" is a Latin legal maxim that refers to the obligation a party has to introduce evidence to support their assertions in a legal proceeding.
Step 2: Detailed Explanation:
- The phrase literally translates to the "burden of proof."
- It dictates that if a party claims a fact exists, they have the legal responsibility (the "onus") to provide sufficient evidence to convince the court or trier of fact of that claim.
- Options (A), (B), and (D) describe evidence or standards of proof, but they do not define the concept of "onus" (the obligation/burden itself) as accurately as (C).
Step 3: Final Answer:
The correct definition of 'onus probandi' is the 'burden of proof' placed on the claimant. Thus, (C) is correct.