What does the idiom in this text suggest?
Erica has a lot on her plate: she is attending college, has a full-time job as a waitress, and volunteers at the animal shelter.

 - Erica has many responsibilities.
 - Erica has worked up an appetite.
The text uses an idiom, an expression that cannot be understood literally.
The idiom a lot on her plate suggests that Erica has many responsibilities. If you have a lot on your plate, you are busy with many different obligations.