The maker of purell hand sanitizer tested consumers’ reactions to its purell sanitizing wipes by getting consumers to look through a newspaper with grocery store ads, make out a grocery list, and then "shop" in a mock store filled with real products, including the new product. this is an example of a(n) what?

This is an example of simulated (laboratory) market test.

Explanation:

Simulated test markets were designed to overcome the drawbacks of standard test markets. Simulated test markets are not conducted in real-world markets; they are laboratory tests. A simulated test market is a staged or artificial marketplace where researchers expose subjects to advertising and other marketing mix variable to gauge the subjects' purchase intent. Simulated test markets are significantly faster and cheaper than standard test markets because the marketer does not have to execute the entire marketing plan.

the technology changed agriculture in an impacting manner since many people left the field work by a cellular or other technological appliances

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