Which of the following catalytic systems is used for the reduction of unsaturated hydrocarbon to saturated hydrocarbon?

The catalytic hydrogenation of unsaturated hydrocarbons (alkenes/alkynes) to saturated hydrocarbons (alkanes) is carried out using hydrogen gas in the presence of a finely divided metal catalyst — most commonly nickel (Sabatier process), platinum, or palladium. Nickel with H2 is the classical industrial catalyst (e.g., used in hydrogenation of vegetable oils to vanaspati).