Answer:
I just want to say this for some of the other answers: The answer is A. ¿Cómo te va?
Step-by-step explanation:
IT IS NOT D. ¿Cómo le va?
Although both mean "How's it going?" the main difference is the formality!
Cómo le va is FORMAL
Cómo te va is INFORMAL
Normally, when you are speaking to your friends, you would not be formal. Formal is for when you are speaking to teachers or adults.