Which passage from “Street Farmer” contains an allusion?

1. First Lady Michelle Obama and Secretary of Agriculture Tom Vilsack have planted organic vegetable gardens.

2. “It’s a form of redlining,” Allen said. “We’ve got to change the system so everyone has safe, equitable access to healthy food.”

3. If inside the greenhouse was Eden, outdoors was, as Allen explained on a drive through the neighborhood, “a food desert.”

4. A writhing mass of red worms dangled from his tines. He bent over, raked another section with his fingers and palmed a few beauties.