If a message has multiple steps and no confirmation after each step what danger exists?

Correct answer: An error may grow in later steps

In a multi-step task, an early misunderstanding can affect every later step. Checkpoints or confirmations allow the sender and receiver to detect and correct that error before it spreads. A is correct. The absence of confirmation does not make the steps correct, determine the message length, or automatically end privacy; its main danger is error propagation.