What is the function of complement shown in parentheses this sentence Did our teasing make (Sidney) upset?

The complement in the sentence "Did our teasing make (Sidney) upset?" is the object of the preposition "make."

Here's why:

* "Make" is a verb that can take an object and an object complement.

* The object is "Sidney," the person who was potentially made upset.

* The object complement is "upset," which describes the state Sidney was put into.

The parenthetical "(Sidney)" is used for clarity and emphasis. It highlights the person who was affected by the teasing.