The correct answer is A. Non-volatile.

Non-volatile memory is a type of computer memory that can retain its data even when the power is turned off. This makes it ideal for use in embedded systems, which are often used in devices that need to operate without power, such as cars and appliances.

RAM, or random-access memory, is a type of computer memory that can be accessed randomly. This means that any piece of data in RAM can be accessed without having to read all of the data that comes before it. RAM is volatile, which means that it loses its data when the power is turned off.

ROM, or read-only memory, is a type of computer memory that can only be read. This means that data can be written to ROM once, but it cannot be changed or erased. ROM is non-volatile, which means that it retains its data when the power is turned off.

In conclusion, non-volatile memory is the most suitable type of memory for low volume production of embedded systems. This is because non-volatile memory can retain its data even when the power is turned off, which is essential for devices that need to operate without power.