Personally, I have to agree with the logic of porsche. Language needs context regardless of what is being said. Ask any politician or public speaker what is thought of their full sentences being taken out of context. The sentence ends up implying something completely different. Thus, for a sentence to be complete, context should not be necessary. That being said, I agree with the theoretical idea porsche described before, "A." in the referred instance of porches' previous post is a complete sentence.

However, the least amount of assumptions left to the the reader/listener is better for the writer/speaker to be understood.

OK. Your turn. Go. Oh? You wonder who? You go. Oh. I see. You are wondering what. You write a response. That's what. Go.

ps: If "I am." is a sentence, then would "I'm." be a sentence?