The following question, consist of two words each that have a certain relationship to each other, followed by four lettered pairs of words. Select the lettered pair that has the same relationship as the original pair of words: Cruel : Kind :: Lethargy : ?

The correct answer is B. Alertness.

Cruel is the opposite of kind, and lethargy is the opposite of alertness.

A. Sharp is not the opposite of dull. Sharp is a synonym for keen, while dull is a synonym for blunt.

C. Internet is not the opposite of offline. Internet is a network of computers, while offline is not connected to the internet.

D. Shrewd is not the opposite of foolish. Shrewd is a synonym for clever, while foolish is a synonym for stupid.