Answer and explanation:
When we mention the words said by another person, directly or indirectly, we are quoting that person. Imagine, for instance, a person who is making a speech about freedom who mentions Dr. King's famous words "I have a dream". That is called a quote. We can, thus, safely answer:
1. referring to words of a previous speaker - Quotation
As soon as we hear the word echo, we think of screaming a word into a cave or over a hill of cliff and hearing it repeated a couple of times. The same principle works for writing. Echo refers to the repetition of a word, a phrase etc. In writing, echo should be avoided unless visibly done on purpose for rhetorical effects. Otherwise, it will just look as if the author's writing skills and vocabulary need some honing. Thus:
2. repeating a word, phrase, pace, or pattern of a prior paragraph -- Echo
There isn't much to explain when it comes to question and answer. The term itself is quite self-explanatory. Asking for an opinion means questioning, inquiring. Giving one's opinion after being asked means answering the question. Thus:
3. asking an opinion then giving the response - Question and Answer
Finally, when it comes to grammar and writing, transitions are words or phrases used to connect ideas inside a sentence, a paragraph, or a text. We can assume then that a double transition is the usage of more than one connective to do so. Thus,
4. using more than one connective - Double Transition
