The correct answer to the following question is Option D (Oxymoron).
Explanation:
Oxymoron:
A rhetorical device or system that uses an apparent self-contradiction to explain a rhetorical point or expose a paradox, known as Oxymoron.
In the narrow sense, oxymorons are a rhetorical device intentionally being used by narrator and intended by the audience to be understood as just that.
Oxymoron is a speech figure that combines two opposing ideas to generate an effect. The common phrase of oxymoron is a variation of a noun adjective with opposite meanings like "cruel nature" or "living demise". The contrasting words / phrases isn't always glued together, though.
