Final answer:
Off-the-shelf software is generally not highly customizable, designed for the general market and usually requires a licensing fee.
Step-by-step explanation:
The characteristic of off-the-shelf software is that the software is generally not highly customizable. This type of software is designed for the mass market and is intended to satisfy the needs of as many users as possible with a generic set of features, often at the expense of individual customization options.
This differs from software that might be open-source or custom-built, where users can edit and modify the code. Off-the-shelf software requires a licensing fee, and is typically created by a single company rather than a worldwide community of developers.
The characteristic of off-the-shelf software that is generally not highly customizable is option C. Off-the-shelf software refers to pre-developed software that is ready to use without any customization. It is designed to meet the needs of a wide range of users and is available for purchase or download without the need for extensive modifications.