Answer: a)Classical component failure
Explanation: Classical component failure is considered as the failure that occurs in the electronic components.Radiator leak occurring in automobile vehicle due to the corrosion caused by components which results in coolant of the radiator to flow out or leak.
Due to over heating of automobile parts, damaged condition of vehicle, engine destruction etc can lead to the corrosion of the radiator due to which radiator leak can happen.Thus, it is a type of common component failure.
Other options are incorrect because wear-out failure occurs due to exhaustion of the automobile parts which create difficulty in execution of vehicle, common-mode failure is defined for causing damage to other parts because of one event and system-wide failure that occurs in complete vehicle.Thus, the correct option is option(a).