The correct answer is B. "No way. I don't want to spend my night being sick."
Explanation:
By using refusal skills you let others know you do not agree with an activity or behavior and you will not be part of it. This implies assertive communication because you need to be clear and honest about it without being rude or offending others.
In the case of Liam, the best statement for assertively refuse binge drinking is "No way. I don't want to spend my night being sick" because by using the expression "No way" he refuses participating in binge drinking; this is supported by the reason provided by Liam "I don't want to spend my night being sick" that shows Liam will not participate in this behavior; also, the language is clear and honest without being offensive (assertive language).