The correct answer is: B. message relaying.
Message relaying is a technique used in wireless networks to improve the reliability of data transmission. It works by having multiple nodes in the network relay messages for each other. This can help to ensure that messages are delivered even if one node is lost or fails.
Initialization is the process of setting up a communication link between two nodes. It involves exchanging a series of messages to establish a common set of parameters, such as the data rate and error correction code.
Selective recovery is a technique used to recover from lost or corrupted messages. It works by having the receiver request a retransmission of any messages that were not received correctly.
Lost message detection is the process of detecting when a message has been lost. It can be done by using a timer to track the expected arrival time of a message. If the message does not arrive within a certain time frame, it is assumed to have been lost.
In conclusion, the correct answer is: B. message relaying. Message relaying is a technique used in wireless networks to improve the reliability of data transmission. It works by having multiple nodes in the network relay messages for each other. This can help to ensure that messages are delivered even if one node is lost or fails.