If you are aware of the expiration dates then you'll know when it has spoiled or how much time you have left.That way you aren't drinking something spoiled or eating something half rotted.
<span> It is less likely that the shoe will slip while someone is walking</span>
The answer to your question would be "a". This is the answer choice because, participating in a drinking game, drinking for the first time and winning a bet or dare aren't "life threatening". Thus leaving the answer choice "a" because falling into a coma could be life threatening. I hope this answers your question :)