C). relationships i think
Undesirable situation that occurs when a device or system attempts to perform two or more operations at the same time, but because of the nature of the device or system, the operations must be done in the proper sequence to be done correctly.
Happy ending
Gatsby and daisy run away together and get married, Nick follows along and they live happily ever after.
Gatsby dies, Nick becomes a famous writer exposing Tom, Tom is arrested for his murder, daisy leaves her old life and remarries rich.