Because communication involves two or more people acting in both sender and receiver roles and because their messages are dependent on and influenced by those of their partner means that communication is .

Transactional process

Explanation:

Because communication involves two or more people acting in both sender and receiver roles and because their messages are dependent on and influenced by those of their partner means that communication is a transactional process i.e. a give and take process.

If the sender relays a message and the receiver does not reply or reply not taking cognizance of the sender's message, communication has not taken place.

For example, if consider this.

Sender: How old are you?

Reciever: My Cat is Red.

The response of the receiver is not in tune with the sender and so communication has not taken place.