A customer of a bank has placed a dispute on a payment for a credit...

 Explanation:

Non-repudiation ensures that a party cannot deny the authenticity of their digital signature or transaction.

Digital signatures provide this assurance by cryptographically linking the signer to the transaction, safeguarding transaction integrity and authenticity.

 Why Other Options Are Incorrect:

B. Conflict resolution: Refers to resolving disputes but does not describe the capability of proving a transaction.

C. Strong authentication: Relates to verifying identity but not to preventing denial of actions.

D. Digital rights management: Concerns content protection, not transaction integrity.

 EC-Council CISO Reference:

Emphasizes the role of non-repudiation in maintaining trust and integrity in digital transactions.