According to the SMCR model problem in communication can arise when the speaker fails to do what?

According to the SMCR (Source-Message-Channel-Receiver) model, communication problems can arise when the speaker fails to effectively encode their message. This can occur if the speaker uses unclear language, jargon, or fails to consider the receiver's background and context. Additionally, if the speaker does not adjust their delivery based on the audience's needs, it can lead to misunderstandings and ineffective communication.