Why should we prefer vegetable oils over animal fats for cooking food? Give a balanced chemical equation for the reaction for hydrogenation of vegetable oils. Name the catalysts in this reaction.

(N/A) Vegetable oils generally contain unsaturated fatty acids,which are considered healthier for the human body compared to animal fats,which are rich in saturated fatty acids. Saturated fats are associated with higher risks of cardiovascular diseases.
The hydrogenation reaction of vegetable oils is represented as:
$R_2C = CR_2 + H_2 \xrightarrow{Ni/Pd/Pt} R_2CH - CR_2H$
The catalysts used in this reaction are typically finely divided $Ni$ (Nickel),$Pd$ (Palladium),or $Pt$ (Platinum).