The word "hidden" is the past tense of an irregular verb.
To determine the past tense of an irregular verb, you need to know the base form or infinitive of the verb. In this case, the base form of the verb is missing, so it's challenging to identify the past tense accurately. However, out of the given options, "squawked" is the most likely past tense form of an irregular verb. "Aimed" and "tapped" are regular verb forms formed by adding "-ed" to the base form, which is not what happens with irregular verbs. However, without knowing the base form, it's difficult to say for sure if "hidden" is a past tense form of an irregular verb.
