In the latter half of the nineteenth century, the rapid expansion of telegraphic networks fundamentally altered the pace of financial and journalistic communications. Paradoxically, however, this proliferation of electronic transmission created a severe logistical bottleneck within major urban centers. While instantaneous communication between distant cities was readily achieved, the final local distribution of received messages still relied heavily on fleets of messenger boys navigating increasingly congested city streets. To circumvent this inefficiency, engineers in metropolises such as London and Paris deployed extensive pneumatic tube networks—subterranean systems utilizing pressurized air to propel cylindrical canisters containing telegrams directly from central receiving offices to stock exchanges and major newspaper bureaus. Thus, although frequently dismissed by contemporary historians of technology as a quaint evolutionary dead-end, the pneumatic tube was a vital infrastructure that reconciled the electronic speed of the broader network with the physical constraints of urban delivery.
Which of the following best describes the primary rhetorical function of the author's reference to "fleets of messenger boys navigating increasingly congested city streets"?
- Acharacterize the physical distribution of telegrams as a quaint evolutionary dead-end in the lineage of telecommunications
- Bcontrast the instantaneous speed of intercity electronic transmission with the comparative sluggishness of local human labor
- delineate a specific logistical bottleneck that prompted the deployment of a novel infrastructural solutionAnswer
- Dassert that contemporary historians of technology view early urban messenger systems as an inefficient logistical failure
- Edescribe the primary mode of transportation utilized by urban workers in the late nineteenth century