ECDIS must have the capability to preserve the record of the voyage track for the previous __________.

Correct Answer: Option C — 12 hours

IMO performance standards for ECDIS require the system to maintain a continuous record of the vessel's track. This voyage recording must cover at least the previous 12 hours, allowing for post-incident analysis, performance review, and verification of the vessel's path during the watch, as mandated by international maritime safety regulations.