The correct answer is D) inspect and replace at regular intervals. Fiber tails on mooring wires are susceptible to more rapid deterioration compared to the wires themselves due to their exposure to environmental factors like weather, UV radiation, and physical abrasion. To maintain the integrity and safety of the mooring system, it is crucial to inspect the fiber tails at regular intervals and replace them when necessary, as indicated by wear and tear. The other options are incorrect because discarding after initial use (A) is wasteful, washing with degreaser and stowing (B) does not address the underlying issue of deterioration, and lubrication (C) may not effectively prevent chafing and damage over time.