What do updates typically include?

Updates are primarily intended to improve existing software without altering its core functionality drastically. They often focus on fixing bugs that could hinder performance or user experience, as well as introducing minor enhancements that can increase efficiency or usability. These bug fixes may address security vulnerabilities, improve stability, or resolve issues affecting usability. Minor enhancements might include tweaks to the user interface or slight adjustments to features that help streamline user interaction.

In contrast, the other options involve more substantial changes. Comprehensive redesigns of software imply a complete overhaul of the system, which goes beyond the scope of typical updates. Major feature changes suggest significant reworking that can alter how the software functions, while the replacement of legacy systems indicates a transition to an entirely new software setup rather than simple refinement of existing applications. Therefore, the choice regarding bug fixes and minor enhancements accurately captures the nature of what updates generally encompass.