What is the one-word substitute for "A poem of mourning"?

Correct option is C

The correct one-word for the given group of words is (c) Elegy.
Explain the correct answer (with Hindi meaning): An elegy is a poem of lament, mourning the dead or reflecting on loss and mortality (Hindi: शोकगीत/विलाप-काव्य). It often carries a reflective, somber tone.
Example: Thomas Gray’s “ Elegy Written in a Country Churchyard” meditates on death and the forgotten.
Meanings of the given other options:
· (a) Ballad: a narrative poem or song, often in short stanzas, telling a story (Hindi: कथागीत)
· (b) Ode: a lyric poem addressing and often praising a subject in elevated style (Hindi: स्तुति-काव्य)
· (d) Sonnet: a 14-line lyric poem with a fixed rhyme scheme (Hindi: चौदह पंक्तियों की कविता)