Synonym of OSTENTATIOUS

Answer: Option C

Pretty : (of a person, especially a woman or child) attractive in a delicate way without being truly beautiful.
Modest : unassuming in the estimation of one's abilities or achievements.
Showy : having a striking appearance or style, typically by being excessively bright, colourful, or ostentatious.
Flagrant : (of an action considered wrong or immoral) conspicuously or obviously offensive.
Ostentatious : characterized by pretentious or showy display; designed to impress.

Synonym of Ostentatious is Showy