The correct option is B condensation
Condensation polymerisation occurs when monomers containing different functional groups join together to form a repeating unit which in turn forms a polymer. During this, small molecules like water (H2O), ammonia (NH3), etc. are eliminated.
During addition polymerisation, the monomers simply join together to form the repeating units, without elimination of any small molecule. Homopolymerisation is a type of addition polymerisation.