Virtual Circuit switching:It is a packet switching method.In this method, before the data transfer begins in the form of packets, a dedicated path is established between the source and destination and path is called a virtual circuit.Due to virtual circuit, packets are always delivered in a specific order, so delay-jitter problems do not arise during pockets delivery and this is the advantage of using virtual circuit switching techniques.Virtual circuit switching is a connection-oriented technique.So, based on the above points regarding the virtual circuit switching technique option (1) is the correct answer.Important Points:Delay in a network means time taken by data to move from one point to another point.Jitter means the difference in delay between two packets.Mainly four kinds of delay consider on network1) Transmission delay2) Propagation delay3) Queuing delay4) Processing delay