By increasing dues just 2%, the union can raise the $30,000 needed to keep an attorney on retainer for a full year. which type of rhetoric is being used to persuade the audience? a. sarcasm b. ethics c. pathos d. logos

There is no sarcasm.

There is a small logical argument. If you do this, then that will happen.

There is no ethics involved. It is just a statement made. There is no moral judgment if one does not do what the sentence suggests.

There is no appeal to the emotions. It is a straight forward fact. The speaker is trying to persuade an audience that should be raising dues 2%. It that happens a lawyer can be kept on retainer to be of service if he/she is needed.

D. Logos

Explanation:

The type of rhetoric that is being employed here is one of logos. Logos refers to an argument that is made based on evidence and logical arguments. In this  case, the argument that is being used to persuade the reader is statistics. The author wants the reader to use his rationality and the information provided in order to decide whether it is possible to keep an attorney on retainer for a full year.