Wurtz reaction is a nucleophillic substitution reaction as it involves exchange of halogen and metal with the involvement of radical species to form bond.

Hydration of alkene involves act of adding electrophillic hydrogen on nucleophillic alkenes. So, it is a electrophillic addition reaction.

Nitration of alkane involves substitution of from alkene by a nitro group (electrophile). So, it is a electrophillic substitution reaction.

Reaction of alkene with NBS involves formation of free radical from NBS reagent and hydrogen atom at allylic position will get substitution by bromine radical. So, it is a type of free radical substitution reaction.

Hence, the correct match is A-(ii), B-(i), C-(iv), D-(iii).