¿cuáles de las palabras son adverbios?

claramente
estudia
mucho
allí

The words that are adverbs in the list are:

Explanation:

Adverbs are those invariable words that modify the verb, which can be many types:

There are some guidelines that you can apply to identify adverbs of manner  so, since many of them have the ending "mente" as is the case of "claramente," on the other hand "mucho" is an adverb of quantity and "allí" is an adverb of place. The word "estudia" is discarded from the answer since being an action, it is classified as a verb.

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