Correct Option: C

modesty (Noun) : the fact of talking much about your abilities or possessions; decorum
vanity (Noun) : too much pride in your own appearance, abilities
or achievements ; the quality of being unimportant compared with other things that are important
honesty (Noun) : truthfulness
truthfulness (Noun) : honesty
decency (Noun) : honest, polite behaviour that follows accepted moral standards and shows respect for others