The correct options are
A CH≡C−CH2−CH=CH2
C CH2=CH−CH=CH2
D CH3−CH2−C≡C−CH2−CH3
Organic compounds with carbon-carbon double bond(s) or carbon-carbon triple bond(s) are called unsaturated compounds. In the given options except for CH3−CH2−CH2−CH2−OH, all others have either double bonds or triple bonds or both. Hence all others are unsaturated compounds.