When a fluorescent lamp has reached the end of its useful life, it should be replaced immediately. If not, what condition could the resultant flashing cause?

Correct Answer: Option C — damaging the lamps starter and ballast circuit

End-of-life fluorescent lamps continuously attempt to strike through the starter circuit, causing repetitive thermal overload and severe current surges. This continuous flashing rapidly overheats and damages the ballast windings and electronic starter components, leading to premature electrical failure.