Fact 1: Mollusks are invertebrates such as the common snail.

Fact 2: Slugs Slugs, a common Garden pest, are snails without a shell.

Given the two facts above, answer the question "What are invertebrates such as common garden pests with shells?" with the following options: 
- graptolites
 - homogenous
 - mollusks
 - animals
 - micorbes
 - insects
 - gardeners
 - spores


 

   mollusks      