‘Lethargy’ is related to ‘Alertness’ in the same way as ‘Hostility’ is related to:

Options

A. Violence
B. Pride
C. Cordiality
D. Antagonism

Answer

C

Explanation

Relationship between lethargy and alertness `to` Antonyms
i.e. the relationship required here is antonyms.
So clearly, the only option satisfying this relationship with hostility is option C cordiality.