Answer: Element Zn is being oxidized, Element hydrogen is being reduced and it the oxidizing agent.
Explanation:
Oxidation reaction is defined as the reaction in which an element looses its electrons. The oxidation state is increased in these type of reaction.The element undergoing these reactions are said to be oxidized.
Reduction reaction is the reaction in which an element accepts electrons. The oxidation state decreases in these type of reactions. The element undergoing these reactions are said to be reduced.
Oxidizing agents are defined as the agents which helps in the oxidation of other element and itself gets reduced.
Reducing agents are defined as the agents which helps in the reduction of other element and itself gets oxidized.
For the given reaction:

Zinc is getting oxidized to

Hydrogen is getting reduced to

Oxidation reaction:

Reduction reaction:

Here, hydrogen is considered as the reducing agent.