Choose the correct function for "brackets" from the sentence below: my friend cooper needs to go to the orthodontists office on wednesday because one of his brackets is loose *

Question

Choose the correct function for "brackets" from the sentence below: my friend cooper needs to go to the orthodontists office on wednesday because one of his brackets is loose *
simple subject
object of preposition
direct object
predicate nominative***my choice

Ms. Sue · Answer

Nope. one of his brackets . . .

him · Answer

is it a simple subject

Ms. Sue · Answer

No -- (of his brackets) Please do not post this again.