Which sentence uses a present participle as an adjective

A Present participle represents a form that expresses to something that causes some feeling or to demonstrate how a person or a thing are affected by certain action.

e. g. This sport is relaxing.

However, in some cases, a present participle can functionate as an adjective. This phenomenon is called present participle.

e. g. The approaching event caused a lot of negative comments.

In this case, approaching is an adjective that we use in order to describe the event.