Question

read the following sentence from the story.
\by the time i boarded the bus, the flyer was moving a little more shakily, fluttering from passenger to passenger, hovering unsteadily beside the ear of each one.\
in this sentence, the word shakily is a derivation of the base word shake, formed when the suffix -ly is added. what part of speech does the addition of -ly make shakily, and how do you know?
○ it is an adverb, shown by the fact that it describes how an action was performed.
○ it is a noun, shown by the fact that it tells what performed an action.
○ it is an adjective, shown by the fact that it describes a thing.
○ it is a verb, shown by the fact that it names an action.

Explanation:

To determine the part of speech of "shakily", we analyze the suffix -ly and its function. Adverbs often end in -ly and describe how an action is performed. In the sentence, "shakily" describes how the flyer was moving (the action). Nouns name people/things, adjectives describe nouns, and verbs are actions—none fit here. So "shakily" is an adverb as it describes the action's manner.

Answer:

It is an adverb, shown by the fact that it describes how an action was performed.