Short descriptive poem of picturesque scene or incident

Answer: Option C

One word substitute is Idyll.

Malady: a disease or ailment.
Sonnet: a poem of fourteen lines using any of a number of formal rhyme schemes, in English typically having ten syllables per line.
Idyll: a short description in verse or prose of a picturesque scene or incident, especially in rustic life.
Charade: an absurd pretence intended to create a pleasant or respectable appearance.