Sarah is extremely afraid of leaving her dorm. She does not like crowds and worries that other students will be looking at her and judging her. Her attendance for all her classes is low, so her grades are suffering. Sarah's social life has also diminished considerably since she never wants to go out to join her friends at the movies or dinner. The most appropriate diagnosis for Sarah is:

social anxiety disorder

Explanation:

people with social anxiety disorder have social anxiety that is so bad, their day-to-day lives are detrimentally affected and relationships with people, jobs, and education suffer.

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

answer; basic psychology;