For effective written communication among a team, the best options would be:
Option B: Be brief but specific.
This ensures that the message is clear and to the point, making it easier for team members to understand the key information without unnecessary embellishments.
Option D: Double-check messages for errors.
This helps to maintain professionalism and clarity, reducing the likelihood of misunderstandings and ensuring that the intended message is communicated accurately.
So the correct selections are B and D.