Which bulb has the lowest total cost of operation? (a) incandescent (b) fluorescent (c) led

LED have the lowest cost of operation.

Explanation:

If we ignore the initial procurement cost of the items the operational cost of any device consuming electricity is given by

Among the three item's LED consumes the lowest power to give the same level of brightness as compared to the other 2 item's thus LED's shall have the lowest operational cost.

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explanation:

this is true

explanation:

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