Answer:
Adverb clause.
Explanation:
An adverb clause is a clause or group of words that can be used or functioning as an adverb in a given sentence. It modifies the verb or adverb or adjective in the sentence thereby giving extra information about the where, why, how, when, etc of the verb.
As given in the question, the subordinate clause is <em>"while talking"</em>. This subordinate clause needed an independent clause to be able to function as a complete meaningful sentence. This <u>subordinate clause modifies or affects the verb "waved" which makes it an adverb clause</u>.
Thus, the correct answer is the adverb clause.
Hello. You didn't show which words are underlined, so I'll give you the grammatical name and function of all of them.
What: Pronoun. It has the function of referring to or replacing a noun, representing something, which does not have a specific name, but which needs to be represented in the sentence. The pronoun is a variable word.
To do: Verb. It has the function of representing an action, an activity that will be performed by something or someone.
Is: Verb. It has the ability to represent a state or occurrence.
Problem: Noun. It has the function of naming something or someone.
What summary? Sorry I’m just trying to help but I’m confused
