Which of the following is most important in the interpretation of an allusion?

the level of meaning

understanding the reference

communicating effectively

the attention of the reader

Understanding the reference is the most important in the interpretation of an allusion. By knowing and recognizing the source or reference being alluded to, the reader can understand the intended meaning or message behind the allusion. The level of meaning, communicating effectively, and the attention of the reader contribute to the interpretation, but they are not as crucial as understanding the reference itself.