According to which network technique can a project network enumerate and analyze multiple sequences of activities from the start event to the end event?

Assertion (A): Activity-on-Node (AON) diagrams have largely superseded Activity-on-Arc (AOA) diagrams in modern project management. Reason (R): AON networks do not require dummy activities to represent precedence relationships, making them simpler and less error-prone. Which option is correct?

Assertion (A): The critical path in a project network always has zero float for every activity on it. Reason (R): Any delay in a critical activity directly extends the total project completion date, making slack impossible without altering project duration. Select the correct option: