Emily is speaking with Trisha. As she finishes her statement, she uses a falling intonation pattern to signal she is done. Trish notices and then begins to comment. This is an example of .

I can see that there are no choices.

downspeak

Explanation:

"Intonation" refers to the rising and falling of a person's voice when he/she is speaking. When somebody suddenly changes his intonation, this attracts the listeners attention. It allows itself to stand out.

When the intonation falls, such as the situation of Emily above, this means that she is about to end speaking. This signals the listener or listeners to respond. This type of intonation is an example of a "downspeak."

On the contrary, the "upspeak" refers to a rising intonation as one finishes his statement. Some people say it is a strategy for the speaker to control the communication in order to compel the listeners to respond. It is also linked to being unprofessional because of the uncertainty of meaning that it carries.

So, this explains the answer.

the historians cited in the article all agree with one another about the cause of the civil war. despite coming from different backgrounds and cultures, the historians agree that slavery was the root cause of the civil war. the fact that all these historiansgenerally agree with one another makes their shared viewpoints more reliable and valid, especially because the historians have different backgrounds and all work for the well-respected institutions of howard university, clemson university, and the university of colorado.

question - in 1827, john walker, a druggist in a small english town, tipped a splint with sulphur, chlorate of potash, and sulphid of antimony, and rubbed it on sandpaper, and it burst into flame. the druggist had discovered the first friction-chemical match, the kind we use to-day. it is called friction-chemical because it is made by mixing certain chemicals together and rubbing them. although walker's match did not require the bottle of acid, nevertheless it was not a good one. it could be lighted only by hard rubbing, and it sputtered and threw fire in all directions. in a few years, however, phosphorus was substituted on the tip for antimony, and the change worked wonders. the match could now be lighted with very little rubbing, and it was no longer necessary to have sandpaper upon which to rub it. it would ignite when rubbed on any dry surface, and there was no longer any sputtering. this was the phosphorus match, the match with which we are so familiar. according the paragraph what was the benefit of the new phosphorus match? it burst into flame when rubbed on sandpaper. it was made by mixing chemicals. it could be ignited on any dry surface. it threw fire in all directions.

answer - matches required natural chemicals