Correct Option: D

modest (Adjective) : not very large, expensive, important, etc.; not talking much about your own abilities or possessions arrogant (Adjective) : behaving in a proud, unpleasant way; showing little thought for other people
simple (Adjective) : easy ; not complicated ; easy to understand or do
timid (Adjective) : shy and nervous ; not brave
civilized (Adjective) : well–organized socially with a very developed culture and way of life