Answer:
option A i.e. sender
Explanation:
SCMR models represent the model of Berlo's that is used to make the communication easier. it consist of 4 component i.e. sender, Message, channel, and Receiver. This model can be used for encoding and decoding of the communication message.
sender is the source of communication or source of encoding. Receiver and sender work on the same thinking patterns. synchronous and asynchronous are two forms of a communication process that are based on the receiver and sender contact.