Question

What do you mean by 'onus probandi'?

• A. Actual evidence, documents, or witnesses presented to substantiate that claim.
• B. "The fact to be proved" or the "ultimate fact" that needs to be established in a legal case, such as the core elements of a crime or a cause of action.
• C. 'Burden of proof' which places the responsibility on the party making an affirmative claim to substantiate it with evidence.
• D. The prosecution in a criminal case must prove beyond a reasonable doubt, not only a criminal act, but also a certain level of a guilty mind (mens rea), specified in the criminal statute.

Hint:

"Onus Probandi" = Burden of Proof. If you allege it, you must prove it—this is the fundamental rule of evidence in both civil and criminal law.

Answer 1

The Correct Option is C

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.

Answer 2

The question asks what the Latin phrase "onus probandi" means. Breaking down each option against the literal and legal meaning of the phrase clarifies which one is correct.

1. Actual evidence, documents, or witnesses presented to substantiate a claim: This describes the material used to discharge a burden, not the burden itself. Evidence is the output of trying to meet the onus, but "onus probandi" names the duty to produce that evidence, not the evidence itself, so this option confuses the tool with the obligation.
2. "The fact to be proved" or the "ultimate fact" needed to establish a case: This describes what lawyers call the factum probandum, the fact in issue that a party is trying to establish. That is a related but distinct legal concept from onus probandi, which concerns who carries the duty to prove that fact, not what the fact itself is.
3. "Burden of proof," placing responsibility on the party making an affirmative claim: Onus literally means burden or load, and probandi means of proving; together the phrase translates directly to burden of proof. This matches the settled legal meaning, that whoever asserts a fact must be the one to establish it with evidence.
4. The prosecution must prove both the criminal act and a guilty mind beyond reasonable doubt: This describes a specific standard and scope of proof applicable in criminal trials, not the general meaning of the Latin maxim itself. It is one application of a burden of proof, not a definition of "onus probandi" as a term.

Only the option describing "burden of proof" placed on the party making the claim actually defines the phrase; the others describe related but distinct ideas such as the evidence itself, the fact to be proved, or a specific criminal standard.

Therefore, the correct answer is 'Burden of proof' which places the responsibility on the party making an affirmative claim to substantiate it with evidence.