Question

the animal control workers seized the starving dogs from their owner. heinous facility mongrel

Explanation:

To solve this, we analyze the context: the sentence is about an owner who starved dogs, so we need an adjective to describe the owner. "Heinous" means extremely wicked or evil, fitting the context of a cruel owner. "Facility" is a noun (a place or resource), and "mongrel" is a noun (a mixed - breed dog), so they don't fit as an adjective for "owner".

Answer:

heinous