What is the benefit of an audit trail in an ICT-based system?

Correct answer: It records who made which change and when

An audit trail is a chronological record of important actions performed in a system. It can show which user accessed or changed information, what action occurred and when it happened. This supports accountability, investigation, error checking and security review, so option A is correct. It does not grant administrator rights, publish data automatically or replace authentication such as passwords.