Final answer:
Blackberry OS 4.7 likely supports AJAX and CSS web standards, a characteristic of web compatibility at the time. Memory specifications like 1 GB onboard memory were not standard for devices with this OS, although 128 MB flash memory was more common.
Step-by-step explanation:
The student has asked about the features supported by Blackberry OS 4.7. Specifically, the query is whether Blackberry OS 4.7 supports AJAX and CSS web standards, 1 GB onboard memory, or 128 MB flash memory, or all of these. It's important to note that at the time of this OS version, the primary focus would be on system compatibility with web standards and built-in memory specifications.
However, Blackberry OS 4.7 is not the newest version, as the information may be dated. Being an older operating system, it would typically support basic web standards of its time, which includes support for AJAX and CSS which are crucial for rendering websites. Nevertheless, regarding onboard memory, Blackberry devices usually came with varying specifications, and 128 MB flash memory was common around the time of OS 4.x releases, while 1 GB onboard memory was not standard for devices running this OS version.
Therefore, the correct answer is likely that Blackberry OS 4.7 supports AJAX and CSS web standards, as well as potentially 128 MB flash memory, but not necessarily 1 GB onboard memory. So the most accurate choice would likely be (a) AJAX and CSS web standards, though without specific device context, it's difficult to confirm the memory specifications.