Concept:The stored program concept means both instructions and data are stored in the computer's memory before execution.
Explanation:EDVAC stands for Electronic Discrete Variable Automatic Computer.
It was one of the earliest computers to use the stored program concept.
This concept allows a program's instructions to be held in memory just like data.
Because of this, the computer can easily change tasks without rewiring.
It forms the basis of modern computer architecture.
Packet routing, circuit switching, and packet switching are used in computer networking, not in computer design.
Therefore, EDVAC's key design concept is the stored program idea.
Answer:B. stored program