In the interest of one's own reputation one should avoid ostentation while entertaining friends.

Answer: Option A

ostentation : the pretentious or showy display of wealth and luxury, designed to impress.
miserliness : excessive desire to save money; extreme meanness.
simplicity : the quality or condition of being easy to understand or do.
purity : freedom from adulteration or contamination.
innocence : the state, quality, or fact of being innocent of a crime or offence.


Antonym of ostentation is miserliness