Correct Option: C

extravagant (Adjective) : spending a lot more money than is necessary
parsimonious (Adjective) : extremely unwilling to spend money ; mean
prodigious (Adjective) : very large or powerful ; colossal ; enormous
selfless (Adjective) : thinking more about the needs, happiness, etc. of other people than about your own
ostentatious (Adjective) : expensive or noticeable in a way that is intended to impress people ; showy