Answer: Giving a presentation in front of my class, I suddenly developed severe stage fright.
Step-by-step explanation:
A verb phrase is the part of a sentence which consist of a verb and the verb dependents which can either be a direct object or an indirect object.
Verbs are the words that demonstrate or show the action that one does such as dance, eat, sing, play etc. When these words are combined with linking verbs, like must, is, has etc, then the verb phrases are being formed.
Based on the above explanation, the sentence that contains a verbal phrase acting as a modifier is "Giving a presentation in front of my class, I suddenly developed severe stage fright".