Identify the tone being used and why.
Input: The new policy has been implemented to increase efficiency.
The tone of the statement is one of authority, as the new policy is being implemented to achieve a particular goal. Additionally, the tone also carries a note of assurance, as the new policy will be advantageous for staff and the organization in the long run.
This sentence is written in a tone of authority because it is stating a decision that has been made by someone in a position of authority. It is also written in a tone of certainty because it is stating a fact, not open to interpretation. The purpose of the tone is to communicate a clear and concise message.