Answer:
The correct answer is "impromptu, extemporaneous, manuscript, memorized".
Explanation:
There are different methods to deliver a message to an audience, they have advantages and disadvantages depending of the purpose and nature of the speech to deliver. According to terms of interaction with the audience, impromptu is the one with most interaction since it involves giving the message directly without advance preparation relying on the reaction of the audience. Extemporaneous is the next, which involves giving a carefully planned speech; manuscript is the next, which is giving word by word a text written previously; memorized is the last, as it involves the speaker committed to memory, without adding anything to interact with the audience.
