Final answer:
Postings on bulletin boards provide the lowest quality and quantity of information due to their static nature and lack of interactive elements, compared to telephone, email, and face-to-face communications.
Step-by-step explanation:
When comparing the different forms of communication in terms of quality and quantity of information, postings on bulletin boards are often considered to provide the lowest. In contrast to other options like telephone, email, and face to face communication, postings on bulletin boards are typically static and lack the interactive element. These bulletins can convey basic messages, but they do not offer immediate feedback or the rich, multi-dimensional exchange that occurs in an in-person conversation or even over a real-time digital communication platform.
While telephone and face-to-face interactions allow for nuances like tone of voice and facial expressions, respectively, and email allows for detailed, documented communication, bulletin board postings are limited to the message as written, with no room for dynamic engagement. Furthermore, emails can provide extensive detail and can be reread or referenced later, offering a higher quantity of retrievable information compared to a bulletin board notice.