|A) Unique||B) Slug|
|C) Lazy||D) Skinny|
Lethargic means "sluggish", kind of inactive
Vital means full of energy, lively
So, they are antonyms.
So, for the 2nd part of the analogy, you are looking for a antonym to trite
Trite means lacking originality or freshness. Overused. Kind of like a cliche
So, an antonym could be original, unique, innovative.