The correct answer is: C. Piggyback
A piggyback socket is a type of socket that is used to plug in an external EPROM for prototyping. It is a small, two-pin socket that is typically mounted on a breadboard. The EPROM is then plugged into the piggyback socket, which allows it to be programmed and tested without having to be soldered to the circuit board.
A single socket is a type of socket that can only hold one EPROM. It is typically used in production applications where the EPROM is soldered to the circuit board.
A multi-socket is a type of socket that can hold multiple EPROMs. It is typically used in development applications where multiple EPROMs are needed to be programmed and tested.
A reset socket is a type of socket that is used to reset the EPROM. It is typically used in production applications where the EPROM needs to be reset after it has been programmed.