When she finds out that she has to give a speech, sarah believes that she is going to get nervous, forget what she planned to say, and become embarrassed in front of her classmates. on the day that she gives her speech, this is exactly what happens.
sarah's situation is an example of:

a. stage fright
b. self-fulfilling prophesy
c. visualizing success
d. systematic desensitization

Self-fulfilling prophesy

Explanation:

A self-fulfilling prophecy is a belief of a person about the future. This belief expectation is strong because this belief is held by the person himself. This concept appears regularly in a culture. In this concept, a person has a strong belief and expectation about the future. The placebo effect is a great example of a self-fulfilling prophecy.  

Thus in the above question, Sarah's belief is the example of self-fulfilling prophecy.

try something like republic or democracy joined or something because its talking about a election party.

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