Answer:
The best answer to the question: Impromptu and extemporaneous speaking differ in which of the following ways?, would be, C: Extemporaneous is speaking from a prepared outline; impromptu is speaking with little or no preparation or notes.
Explanation:
In public speaking, preparation is always key to what will be delivered and also how it will be delivered. It takes into account not just the words and structure of a speech, but also the characteristics of the audience and the location where the speech will take place. Preparedeness on the part of the speaker is also important, but also, the naturality with which the sepaker engages the audience, shows confidence and knowledge on what he is saying and delivers the words. There are in general 4 methods for delivering a speech, and two of them are these: Extemporaneous, which means a well-planned speech where there is an outline but that is delivered in a conversational manner and the impromptu speech, which is literally when someone is thrown into the arena to deliver some words. This last one is characterized by its manner of absolute unpreparedness. There are no notes, no practice, just the words that spring into the speaker´s mind. This is why the answer is C.
B is the correct sentence
Answer:
Some of the items on my shopping list, chanterelle mushrooms, white asparagus, and eel, were impossible to find.
Explanation:
Commas in this case, generally your going to add commas in a place where you would take a breath. This wouldn't be colons because thats more of an indication of a place that you could also fit comma-and. Parenthesis clearly don't fit. The only other risk is dashes because you could in theory do "Some of the items on my shopping list-chanterelle mushrooms, white asparagus, and eel-were impossible to find. " But that doesn't read as smoothly so its the less safe of the two choices