Action verb
Yes, type is a verb; type is also a noun.
Her is not any type of verb. It is a pronoun.
The word caused is a verb. It is the past tense of the verb cause.
It's either a verb, as in 'I'll cause that to happen', or a noun as in 'what's the cause of that?'
The word caused is a verb. It is the past tense of the verb cause.
The verb "investigate" has the meaning of looking into the cause of something.
The word type is both a noun and a verb (type, types, typing, typed). Example uses: As a verb: I type on the computer. As a noun: What type of computer do you use? Verb and noun: First type the cells, then describe the types.
An action verb
it is an irregular verb.
It is an intransitive verb.
linking verb
Yes, it is a verb, or at least a type of verb. Experienced is a linking verb.