a mixture a solution an element a compound
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Betsy tries to attract a variety of birds to her backyard. She puts up a bird feeder that contains sunflower seeds and corn. Which term best describes the contents of the bird feeder?
Possibilities:
- a mixture
- a solution
- an element
- a compound

a mixture