Q. Unemployed (doesn't have a job to work) ---> Worker (worker always works, and mostly has a job) --> implies somewhat opposite relationship.
(A) Fallow (uncultivated land to improve fertility of it) ---> Land (is usually cultivated)
(B) Unaware ---> Sleeper (someone who sleeps is always unaware)
(C) Wit (a message whose ingenuity or verbal skill or incongruity has the power to evoke laughter) ---> Jester (A clown, joker)
(D) Renovated (Make brighter or prettier or better) ---> House (!)
Here only (A) shows somewhat opposite relationship, and hence is the answer.