Final answer:
If everyone on a personal watercraft is wearing PFDs or lifejackets, the PWC is only required to carry distress signals, navigation lights, sound signaling devices, and fire extinguishers.
Step-by-step explanation:
In the case where all persons onboard a personal watercraft (PWC) are wearing properly fitted, approved personal flotation devices (PFDs) or lifejackets, the PWC is only required to carry distress signals, navigation lights, sound signaling devices, and fire extinguishers. Other equipment requirements, such as flares or lifebuoys, are waived when everyone on the PWC is wearing PFDs or lifejackets.