Catalytic hydrogenation of unsaturated hydrocarbons to get alkanes is known as a

•  Catalytic hydrogenation of unsaturated hydrocarbons to get alkanes is known as a Sabatier - Senderens reaction

${\mathrm{C}}_{\mathrm{n}}{\mathrm{H}}_{2\mathrm{n}}+{\mathrm{H}}_2\stackrel{\mathrm{Ni}}{\to }{\mathrm{C}}_{\mathrm{n}}{\mathrm{H}}_{2\mathrm{n}+2}+\text{ heat }$

•  Sabatier-Senderens reaction converts the unsaturated hydrocarbons into saturated hydrocarbons. It is the process of nickel-based hydrogenation.

Therefore, option B is correct.