Correct answer and explain this question

Dear student,

In the given reaction, CH₂=CH₂ + H₂ ---------> CH₃-CH₃, there is the addition of H₂.
*the reaction requires an active catalyst, typically Pt, Pd, Ni.

As the addition of H₂ or removal of O is called reduction, therefore, there is a reduction of ethylene in the given reaction.

Regards,