Answer: Option C
Explanation: In the given case, Draft motor is doing planned obsolescence in their potential project. The planned obsolescence could not be considered as an illegal activity but is surely an unethical conduct from the part of the organization doing it.
In the given case, the designing is done in a way that the machine shuts after a certain time. This is not illegal as it is not a threat to someone's safety but is does makes consumers pay more for a thing which could be handled in a cost effective manner.
Hence from the above we can conclude that the correct option is C.