Explanation: an adjective is a word that describes or modify a noun or a pronoun in a sentence. In the given sentence we can see an example of an adjectival phrase, because the words "in the experiment" are modifying the noun "stimulants." It isn't a noun phrase because it doesn't function as a subject, object, or prepositional object. It isn't a verb phrase because it doesn't indicate an action, and it isn't an adverbial clause because it doesn't modify a verb or an adverb.
i feel that the students in that class will start disrespecting her not following rules and will eventually Stop following the expectations, Michaels parents will not respect her order of authority and will most likely go against what she says