Professional business communication should be clear and concise, proof-read before being sent, and use punctuation correctly. Therefore, statements 2, 3, and 4 are correct.

Clarity and conciseness reduce ambiguity and help the recipient quickly understand the relevant facts, required action, and next steps. Proof-reading allows the analyst to detect spelling, grammatical, factual, and formatting errors before communication reaches a customer or colleague. Correct punctuation improves readability and reduces the risk that a sentence will be interpreted incorrectly. These behaviours also protect the professional reputation of both the analyst and the Service Desk.

Statement 1 is incorrect because routinely copying the entire team is not a requirement of professional communication. Recipients should be selected according to legitimate information and action requirements. Unnecessary distribution creates information overload, may expose information to people who do not require it, and can make accountability less clear. Communication is a defined competency within SDA v9, covering formal and informal communication and effective service interaction. Therefore, B is correct.