Here's why:
* Verb: A verb describes an action, state of being, or occurrence. In this case, "claimed" signifies an action – someone is asserting or stating something as true.
Let's break down the other options:
* Noun: A noun is a person, place, thing, or idea (e.g., "dog," "house," "happiness").
* Adverb: An adverb modifies a verb, adjective, or another adverb, providing information about how, when, where, or to what extent (e.g., "quickly," "happily," "very").
* Adjective: An adjective describes or modifies a noun or pronoun, providing information about its qualities (e.g., "big," "red," "beautiful").
* Conjunction: A conjunction connects words, phrases, or clauses (e.g., "and," "but," "because").
Example:
"The witness claimed to have seen the suspect at the crime scene." In this sentence, "claimed" is the action word, describing what the witness did.