[1] In the winter of 1902, during a visit to New York City, Mary Anderson observed a trolley driver struggling to keep the windshield clear of freezing sleet. [2] The driver had to open the front window, lean out into the icy wind, or even stop the trolley entirely to wipe the glass by hand. [3] Recognizing a clear need, Anderson sketched a design for a hand-operated rubber squeegee blade that could be controlled via a lever inside the vehicle. [4] She was granted a patent for her window-cleaning device in 1903. [5] Early twentieth-century trolleys and automobiles operated at much slower speeds than modern vehicles do. [6] Unfortunately, automotive manufacturers of the era failed to see the commercial value in her design, mistakenly believing that the motion of the blades would distract drivers.
The writer is considering deleting Sentence 5 from the paragraph. Should the sentence be kept or deleted?
- Deleted, because it interrupts the paragraph's focus on the development and reception of Anderson's invention with an irrelevant detail about the operating speeds of early vehicles.Cevap
- BDeleted, because it contradicts the paragraph's earlier assertion that Anderson's design was specifically created for modern high-speed transportation.
- CKept, because it provides crucial historical context that explains why early automotive manufacturers rejected Anderson's design.
- DKept, because it supports the paragraph's focus on the technological limitations that Anderson had to overcome to patent her device.