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.
Catching a bus can be the cheapest way of traveling between cities. It
is often the only way of getting to smaller towns if you are not
driving a car. Remember that bus travel can be very long due to the
great distances involved. Most buses have air conditioning and a
washroom on board. The largest network of bus routes is run by a
company called Greyhound and its affiliates.
1. The answer is b.) whom.
2. The answer is b.) sudden.
3. The use of simple diction instead of lofty language
