The simple answer is that sulphur can be reduced to hydrogen sulphide and therefore it is an oxidizing agent.
In a redox chemical process, an oxidizing agent is a material that obtains or "accepts" or "receives" an electron from a reducing agent (also known as an oxidant, oxidizer, electron recipient, or electron acceptor) (called the reductant, reducer, or electron donor). So every substance that oxidizes another substance is an oxidant. By saying that oxidizers "undergo reduction" and "are reduced" while reducers "undergo oxidation" and "are oxidized," it can be indicated that the oxidizer's oxidation state, which characterizes the degree of electron loss, falls while the reductant's increases. Oxygen, hydrogen peroxide, and halogens are frequently used oxidizing agents.
A chemical species that goes through a chemical reaction in which it obtains one or more electrons is referred to be an oxidizing agent in this sense.
To learn more about oxidizing agent from the given link:
brainly.com/question/1390694
#SPJ4