Correct Answer - D
Order of relative acidity
`H-OHgtH-ORgtH-C-=CHgtH-NH_2` order of relative basicity
`overline(O)Hltoverline(O)Rltoverline(C)-=CHltoverline(N)H_2`
Note that though N is more electronegative than C atom the basic character of `overline(N)H_3` predominates over its acidic character.