Final answer:
The best approach when refusing to ride with an impaired driver is apologizing for not going.
Step-by-step explanation:
The best approach when refusing to ride with an impaired driver is C. Apologizing for not going.
This approach allows you to express concern for your safety and the safety of others without directly confronting or criticizing the impaired driver.
By apologizing, you can maintain a friendly and non-confrontational demeanor while still prioritizing your well-being.