Your question is incomplete because you have not provided the underlined pronoun or the answer options, which are:
The designer dressed them in black and teal costumes.
Answer options:
objective; direct object
possessive; adjective
nominative; subject
nominative; appositive
Answer:
objective; direct object
Step-by-step explanation:
Object pronouns are used after verbs or prepositions. Here, the object pronoun them refers to a group of two or more people or things mentioned before. Besides, it functions as a direct object in the sentence, since it receives the action of the verb dressed. As a result, the people or things referred to and mentioned before are the recipients of the action performed by the designer.