An analogy is a comparison between two things that are alike in some way, often used to explain a concept or idea. Among the options provided, "Life is a dance. You learn as you go." is the best analogy because it compares the concept of life to a dance, highlighting the idea that both involve learning and adapting over time.
The other options do not present clear analogies in the same way.
So, the response that fits the definition of an analogy is:
Life is a dance. You learn as you go.