Question

highlight the proper noun.
noun/pronoun verb article adjective preposition adverb conjunction
ugh! margo never listens to anyone except herself, and that is exactly why she is always in the doghouse.

Explanation:

A proper noun is a specific name for a particular person, place, or thing, and it is capitalized. In the given sentence, "Margo" is the specific name of a person, making it the proper noun.

Answer:

Margo