What is/are the adjective(s) in the following sentence?: His broken alarm clock startled him in the middle of the night.
His, broken, alarm, the, the
His is a possessive pronoun/adjective (technically a determiner).
Broken is describing the clock.
Alarm is describing the clock (what type of clock is it).
The is an article adjective (other articles are a and an). Sometimes the is counted as an adjective, but it is technically a determiner because it doesn't provide actual information about the clock.