Wistful longing for something one has known in the past

A. Hysteria

B. Megalomania

C. Nostalgia

D. Logomania

Answer: Option C

Solution(By Examveda Team)

One word substitute is Nostalgia.

Hysteria: exaggerated or uncontrollable emotion or excitement.
Megalomania: obsession with the exercise of power.
Nostalgia: a sentimental longing or wistful affection for a period in the past.
Logomania: pathologically excessive (and often incoherent) talking.