Question 419Electricity & Electronics - QMED

The correct answer is A) the fluorescent lamp tube. When a fluorescent lamp fails to light and both ends of the tube are severely darkened, it typically indicates that the lamp itself has reached the end of its useful life and needs to be replaced. The darkening at the ends of the tube is a sign of lamp failure, and replacing the entire lamp tube is the necessary solution in this scenario. The ballast, circuit breaker, and starter are not the root cause of the problem in this case. The other options (B, C, and D) would not solve the issue of the failed, darkened fluorescent lamp tube.