Respuesta :

Answer:

C

Step-by-step explanation:

The rule for a function is every input has one output. In other words, one input (also known as a domain or x-value) cannot be pointing to two different outputs (also known as ranges or y-values).  Also, every output must have at least one input. The only option that adheres to these rules is C.

i’m pretty sure it is c. i would wait for other answers though. you can definitely cross of a and b