Final answer:
The set of ordered pairs that represents a function is option C (-1,-1),(-1,0),(0,0),(0,1).
Step-by-step explanation:
The set of ordered pairs that represents a function is option C (-1,-1),(-1,0),(0,0),(0,1). In a function, each input (x-value) is associated with only one output (y-value). In this set, each x-value appears only once, and for each x-value, there is only one corresponding y-value. This set satisfies the criteria for a function.