1) C
2) What are the ingredients of the soup you made today? This is a question that could have 1 to infinity answers. A Binary message has two possible answers 0/1 or yes/no. By asking a question that could require more than two answers that are all different it requires more than a binary message.
3) Does the soup contain carrots? This question could be answered with a simple yes or no which is two different states, which can be answered with a binary message.
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