Take a look at the passage again:
Richie loves to walk his friends' dogs at Lake
Eola Park. For example, Kim's Labrador retriever Murphy or Gary's
bulldog Kembo. Beautiful women, Richie has learned, gravitate toward guys
with cute dogs.
You chose the first part, Richie loves to walk his friends' dogs .... This part has a main clause: Richie is the subject; loves is the verb. A fragment will not have a main clause.
Go back to the passage to try again.